29,245 Reference Vectors, Clipart, Icons, Backgrounds And Graphic Designs - Ready For Royalty Free Download From Dreamstime`s Creative Contributors.

A clean, minimalist black and white line art icon representing a dial indicator. The graphic features a circular dial with tick marks and a central pointer, connected to a handle with a circular grip. This symbol signifies precision measurement, accuracy, and technical tools. Ideal for use in engineering, manufacturing, quality control, and scientific contexts. Reference vectors
A clean, minimalist black and white line art icon representing a dial indicator. The graphic features a circular dial with tick marks and a central pointer, connected to a handle with a circular grip. This symbol signifies precision measurement, accuracy, and technical tools. Ideal for use in engineering, manufacturing, quality control, and scientific contexts. Reference vectors
December 2027 monthly calendar with a minimalist design. The weekdays are labeled from Sunday to Saturday. Sundays are marked in red, while other days are in black. The calendar features simple fonts with "December" in blue and "2027" in orange. The background consists of a white space with orange curved accents on the top left and bottom right corners, adding a modern touch. The arrangement is clear and user-friendly, allowing easy reference for dates throughout the month. Reference vectors
December 2027 monthly calendar with a minimalist design. The weekdays are labeled from Sunday to Saturday. Sundays are marked in red, while other days are in black. The calendar features simple fonts with "December" in blue and "2027" in orange. The background consists of a white space with orange curved accents on the top left and bottom right corners, adding a modern touch. The arrangement is clear and user-friendly, allowing easy reference for dates throughout the month. Reference vectors
A speech bubble with three dots is paired with opposing arrows for exchanging messages. This communication concept can accompany discussion platforms, training materials and messaging services. It gives a visual reference for exchanging information, expressing a thought or responding to another person. Reference vectors
A speech bubble with three dots is paired with opposing arrows for exchanging messages. This communication concept can accompany discussion platforms, training materials and messaging services. It gives a visual reference for exchanging information, expressing a thought or responding to another person. Reference vectors
A standing kick scooter depicts a compact way to travel short distances. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A standing kick scooter depicts a compact way to travel short distances. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A helmeted rider sits on a motorcycle shown in profile. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A helmeted rider sits on a motorcycle shown in profile. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
Two people hold up a house roof to depict shared housing support. This social concept can accompany community initiatives, cooperation programs and shared projects. It offers a visual reference for discussing how people participate, support one another or work together. Reference vectors
Two people hold up a house roof to depict shared housing support. This social concept can accompany community initiatives, cooperation programs and shared projects. It offers a visual reference for discussing how people participate, support one another or work together. Reference vectors
A smiling face appears beside a speech bubble labeled APPROVED. Use this feedback design in review interfaces, customer surveys and service evaluations. It gives a visual reference for communicating opinions, comparing scores or identifying a review response. Reference vectors
A smiling face appears beside a speech bubble labeled APPROVED. Use this feedback design in review interfaces, customer surveys and service evaluations. It gives a visual reference for communicating opinions, comparing scores or identifying a review response. Reference vectors
A lightning bolt inside a house appears beside a leaf to depict environmentally conscious home energy. This electricity concept can accompany energy management information, efficiency guides and utility services. It provides a visual reference for explaining power use and electrical system functions. Reference vectors
A lightning bolt inside a house appears beside a leaf to depict environmentally conscious home energy. This electricity concept can accompany energy management information, efficiency guides and utility services. It provides a visual reference for explaining power use and electrical system functions. Reference vectors
A small storefront sits beside a steaming coffee cup. This coffee design can accompany cafe menus, beverage information and coffee service materials. It provides a visual reference for a coffee related topic, product or moment of refreshment. Reference vectors
A small storefront sits beside a steaming coffee cup. This coffee design can accompany cafe menus, beverage information and coffee service materials. It provides a visual reference for a coffee related topic, product or moment of refreshment. Reference vectors
A car follows a winding dotted path toward a map pin. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A car follows a winding dotted path toward a map pin. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A DJ behind a console and a dancing person appear beneath a disco ball. This musical design can accompany music services, creative activities and entertainment information. It provides a visual reference for discussing sound, musical expression and ways of engaging with music. Reference vectors
A DJ behind a console and a dancing person appear beneath a disco ball. This musical design can accompany music services, creative activities and entertainment information. It provides a visual reference for discussing sound, musical expression and ways of engaging with music. Reference vectors
A clean black outline grid presents fifteen simple badge and interface shapes on a plain white background, arranged in three rows with generous spacing. The forms include rounded rectangles, capsules, polygons, a diamond, a scalloped seal, a circle, an irregular blob, a shield, an arch, and a speech bubble, all drawn with thin, consistent strokes and no fill. The restrained monochrome design feels orderly and practical, suitable as a visual reference for icons, labels, or reusable graphic elements. Reference vectors
A clean black outline grid presents fifteen simple badge and interface shapes on a plain white background, arranged in three rows with generous spacing. The forms include rounded rectangles, capsules, polygons, a diamond, a scalloped seal, a circle, an irregular blob, a shield, an arch, and a speech bubble, all drawn with thin, consistent strokes and no fill. The restrained monochrome design feels orderly and practical, suitable as a visual reference for icons, labels, or reusable graphic elements. Reference vectors
This minimalist vector illustration features an open book with a magnifying glass positioned over its pages. Rendered in a clean, flat design style using black, white, and shades of gray, the icon visually represents concepts such as research, learning, knowledge discovery, and information retrieval. It's ideal for educational materials, library services, academic websites, search functions, study guides, or any design related to exploring literature, data analysis, or finding specific details within written content. The simple graphic conveys clarity and focus on investigation. Reference vectors
This minimalist vector illustration features an open book with a magnifying glass positioned over its pages. Rendered in a clean, flat design style using black, white, and shades of gray, the icon visually represents concepts such as research, learning, knowledge discovery, and information retrieval. It's ideal for educational materials, library services, academic websites, search functions, study guides, or any design related to exploring literature, data analysis, or finding specific details within written content. The simple graphic conveys clarity and focus on investigation. Reference vectors
Three horizontal rows display the same set of fourteen black interface symbols: a user silhouette, globe, clock, telephone handset, house, map pin, at sign, calendar, information symbol, notification bell, magnifying glass, question mark, chat bubble, and gear. The icons appear first as solid shapes on white, then as outlined forms within circles, and finally as white symbols reversed out of black circles. Even spacing, crisp contrast, and a plain white background give the image the orderly, practical look of a digital icon reference sheet. Reference vectors
Three horizontal rows display the same set of fourteen black interface symbols: a user silhouette, globe, clock, telephone handset, house, map pin, at sign, calendar, information symbol, notification bell, magnifying glass, question mark, chat bubble, and gear. The icons appear first as solid shapes on white, then as outlined forms within circles, and finally as white symbols reversed out of black circles. Even spacing, crisp contrast, and a plain white background give the image the orderly, practical look of a digital icon reference sheet. Reference vectors
Cute cartoon turkey character standing in a turnaround sheet featuring front, back, and side views. Friendly farm bird mascot illustrated in a clean vector style. Ideal for animation projects, game development, character design references, children's books, educational materials, stickers, branding, Thanksgiving-themed content, and farm animal illustrations. Isolated on white background. Reference vectors
Cute cartoon turkey character standing in a turnaround sheet featuring front, back, and side views. Friendly farm bird mascot illustrated in a clean vector style. Ideal for animation projects, game development, character design references, children's books, educational materials, stickers, branding, Thanksgiving-themed content, and farm animal illustrations. Isolated on white background. Reference vectors
A glowing light bulb contains 3W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A glowing light bulb contains 3W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A horizontal dumbbell with small end weights depicts resistance exercise. This strength training design can accompany workout instructions, gym programs and exercise equipment information. It gives a compact reference for resistance exercise and physical conditioning activities. Reference vectors
A horizontal dumbbell with small end weights depicts resistance exercise. This strength training design can accompany workout instructions, gym programs and exercise equipment information. It gives a compact reference for resistance exercise and physical conditioning activities. Reference vectors
A piano keyboard depicts music making and instrument practice. This musical design can accompany music services, creative activities and entertainment information. It provides a visual reference for discussing sound, musical expression and ways of engaging with music. Reference vectors
A piano keyboard depicts music making and instrument practice. This musical design can accompany music services, creative activities and entertainment information. It provides a visual reference for discussing sound, musical expression and ways of engaging with music. Reference vectors
An image badge and five stars depict a favorable evaluation of visual quality. Use this feedback design in review interfaces, customer surveys and service evaluations. It gives a visual reference for communicating opinions, comparing scores or identifying a review response. Reference vectors
An image badge and five stars depict a favorable evaluation of visual quality. Use this feedback design in review interfaces, customer surveys and service evaluations. It gives a visual reference for communicating opinions, comparing scores or identifying a review response. Reference vectors
A small car follows a wavy dotted line toward a destination marker. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A small car follows a wavy dotted line toward a destination marker. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A front facing passenger car depicts everyday road travel. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A front facing passenger car depicts everyday road travel. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A glowing light bulb contains 7W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A glowing light bulb contains 7W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A car above three people depicts carpooling and shared road travel. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A car above three people depicts carpooling and shared road travel. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
Two hands meet in a handshake beneath speech bubbles to depict an agreement through dialogue. This communication concept can accompany discussion platforms, training materials and messaging services. It gives a visual reference for exchanging information, expressing a thought or responding to another person. Reference vectors
Two hands meet in a handshake beneath speech bubbles to depict an agreement through dialogue. This communication concept can accompany discussion platforms, training materials and messaging services. It gives a visual reference for exchanging information, expressing a thought or responding to another person. Reference vectors
A suspended sign displays a coffee cup with rising steam. This coffee design can accompany cafe menus, beverage information and coffee service materials. It provides a visual reference for a coffee related topic, product or moment of refreshment. Reference vectors
A suspended sign displays a coffee cup with rising steam. This coffee design can accompany cafe menus, beverage information and coffee service materials. It provides a visual reference for a coffee related topic, product or moment of refreshment. Reference vectors
A helmeted person rides a motor scooter toward the viewer. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A helmeted person rides a motor scooter toward the viewer. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A play triangle and musical note combine video playback with audio. This musical design can accompany music services, creative activities and entertainment information. It provides a visual reference for discussing sound, musical expression and ways of engaging with music. Reference vectors
A play triangle and musical note combine video playback with audio. This musical design can accompany music services, creative activities and entertainment information. It provides a visual reference for discussing sound, musical expression and ways of engaging with music. Reference vectors
A helmeted rider leans forward on a moving motorcycle. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A helmeted rider leans forward on a moving motorcycle. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A glowing light bulb contains 9W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A glowing light bulb contains 9W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A stylized virus with projecting spikes sits inside a round badge. This healthcare design can accompany medical service information and health education materials. It offers a visual reference for discussing care, prevention or a topic related to personal health. Reference vectors
A stylized virus with projecting spikes sits inside a round badge. This healthcare design can accompany medical service information and health education materials. It offers a visual reference for discussing care, prevention or a topic related to personal health. Reference vectors
A lidded cup with ice and a straw depicts a cold takeaway coffee. This coffee design can accompany cafe menus, beverage information and coffee service materials. It provides a visual reference for a coffee related topic, product or moment of refreshment. Reference vectors
A lidded cup with ice and a straw depicts a cold takeaway coffee. This coffee design can accompany cafe menus, beverage information and coffee service materials. It provides a visual reference for a coffee related topic, product or moment of refreshment. Reference vectors
A person and calculator depict the preparation of financial calculations. This financial concept can accompany accounting information, money management services and business presentations. It offers a visual reference for explaining transactions, financial records or the handling of funds. Reference vectors
A person and calculator depict the preparation of financial calculations. This financial concept can accompany accounting information, money management services and business presentations. It offers a visual reference for explaining transactions, financial records or the handling of funds. Reference vectors
A smiling face appears beside a speech bubble labeled CONFIRMED. Use this feedback design in review interfaces, customer surveys and service evaluations. It gives a visual reference for communicating opinions, comparing scores or identifying a review response. Reference vectors
A smiling face appears beside a speech bubble labeled CONFIRMED. Use this feedback design in review interfaces, customer surveys and service evaluations. It gives a visual reference for communicating opinions, comparing scores or identifying a review response. Reference vectors
A lidded takeaway cup with a bean emblem releases steam. This coffee design can accompany cafe menus, beverage information and coffee service materials. It provides a visual reference for a coffee related topic, product or moment of refreshment. Reference vectors
A lidded takeaway cup with a bean emblem releases steam. This coffee design can accompany cafe menus, beverage information and coffee service materials. It provides a visual reference for a coffee related topic, product or moment of refreshment. Reference vectors
A glowing light bulb contains 5W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A glowing light bulb contains 5W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A clean white sheet presents a hand-drawn collection of colorful icons and interface components, arranged in orderly rows. Cartoon portraits, animals, swords, shields, treasure chests, cameras, vehicles and everyday symbols sit above buttons, toggles, sliders, dropdown menus, profile cards, progress bars and notification controls several elements contain legible labels such as 'START,' 'SAVE' and 'SEARCH. ' Thick dark outlines and a bright palette of blues, greens, reds and yellows give the reference-sheet layout a friendly, practical feel for graphic design. Reference vectors
A clean white sheet presents a hand-drawn collection of colorful icons and interface components, arranged in orderly rows. Cartoon portraits, animals, swords, shields, treasure chests, cameras, vehicles and everyday symbols sit above buttons, toggles, sliders, dropdown menus, profile cards, progress bars and notification controls several elements contain legible labels such as 'START,' 'SAVE' and 'SEARCH. ' Thick dark outlines and a bright palette of blues, greens, reds and yellows give the reference-sheet layout a friendly, practical feel for graphic design. Reference vectors
An order confirmation is a message or document sent after a purchase to acknowledge that an order has been received and provide details such as items, payment, and order number. Reference vectors
An order confirmation is a message or document sent after a purchase to acknowledge that an order has been received and provide details such as items, payment, and order number. Reference vectors
An order confirmation is a message or document sent after a purchase to acknowledge that an order has been received and provide details such as items, payment, and order number. Reference vectors
An order confirmation is a message or document sent after a purchase to acknowledge that an order has been received and provide details such as items, payment, and order number. Reference vectors
A seamless African Ankara wax print pattern featuring interlocking ornamental fish motifs and floral rosettes in deep navy blue, scarlet red, and pale yellow. The energetic design combines multi-directional swimming fish packed tightly with decorative circular medallions and linear crackle textures. Suited for festival apparel, casual streetwear jackets, modern interior wallpaper, drapery, and creative merchandise. Design Reference: Dynamic interlocking fish repeat incorporating geometric hatched body panels, circular daisy rosettes, and organic batik lines in rich navy blue, scarlet red, and pale lemon yellow. Reference vectors
A seamless African Ankara wax print pattern featuring interlocking ornamental fish motifs and floral rosettes in deep navy blue, scarlet red, and pale yellow. The energetic design combines multi-directional swimming fish packed tightly with decorative circular medallions and linear crackle textures. Suited for festival apparel, casual streetwear jackets, modern interior wallpaper, drapery, and creative merchandise. Design Reference: Dynamic interlocking fish repeat incorporating geometric hatched body panels, circular daisy rosettes, and organic batik lines in rich navy blue, scarlet red, and pale lemon yellow. Reference vectors
Beetle lineup in pixel art, top view bugs with varied shapes, horns, and segmented bodies across a clean layout. Symbol of biodiversity, nature study, and taxonomy reference. Cartoon vector illustration. Reference vectors
Beetle lineup in pixel art, top view bugs with varied shapes, horns, and segmented bodies across a clean layout. Symbol of biodiversity, nature study, and taxonomy reference. Cartoon vector illustration. Reference vectors
Books with floral spines and one volume lying closed with a ribbon bookmark, hand drawn with soft shapes. Knowledge, study, reading habit, and library concept. Cartoon vector illustration. Reference vectors
Books with floral spines and one volume lying closed with a ribbon bookmark, hand drawn with soft shapes. Knowledge, study, reading habit, and library concept. Cartoon vector illustration. Reference vectors
AI-generated vector illustration of complete baseball field from overhead top-down perspective. Standard diamond layout features lush green outfield grass, rich brown infield dirt, crisp white 90-foot base lines connecting home plate through first, second, third bases. Center pitchers mound with rubber clearly marked, foul lines extending to outfield fence, batter boxes, catchers box. Professional sports field dimensions perfect for coaching diagrams, scorecards, rule books, field planning. vector illustration. Reference vectors
AI-generated vector illustration of complete baseball field from overhead top-down perspective. Standard diamond layout features lush green outfield grass, rich brown infield dirt, crisp white 90-foot base lines connecting home plate through first, second, third bases. Center pitchers mound with rubber clearly marked, foul lines extending to outfield fence, batter boxes, catchers box. Professional sports field dimensions perfect for coaching diagrams, scorecards, rule books, field planning. vector illustration. Reference vectors
Comprehensive collection of recognizable social media, messaging, video, collaboration, and digital communication app icons, featuring popular platforms including Instagram, WhatsApp, Facebook, Threads, Messenger, Gmail, TikTok, X, WeChat, Telegram, YouTube, Pinterest, LinkedIn, Spotify, Zoom, LINE, Snapchat, Microsoft Teams, Discord, Viber, Skype, and Google Meet. This represents modern online communication, social networking, content sharing, digital marketing, mobile applications, internet technology, remote collaboration, and multimedia platforms. Suitable for editorial articles, technology publications, digital marketing materials, communication concepts, websites, presentations, and educational content. Editable format allows easy customization for various design and editorial applications. Reference vectors
Comprehensive collection of recognizable social media, messaging, video, collaboration, and digital communication app icons, featuring popular platforms including Instagram, WhatsApp, Facebook, Threads, Messenger, Gmail, TikTok, X, WeChat, Telegram, YouTube, Pinterest, LinkedIn, Spotify, Zoom, LINE, Snapchat, Microsoft Teams, Discord, Viber, Skype, and Google Meet. This represents modern online communication, social networking, content sharing, digital marketing, mobile applications, internet technology, remote collaboration, and multimedia platforms. Suitable for editorial articles, technology publications, digital marketing materials, communication concepts, websites, presentations, and educational content. Editable format allows easy customization for various design and editorial applications. Reference vectors
Cute cartoon ostrich character standing in a turnaround sheet featuring front, back, and side views. Friendly flightless bird mascot illustrated in a clean vector style. Ideal for animation projects, game development, character design references, children's books, educational materials, stickers, branding, wildlife content, and animal-themed illustrations. Isolated on white background. Reference vectors
Cute cartoon ostrich character standing in a turnaround sheet featuring front, back, and side views. Friendly flightless bird mascot illustrated in a clean vector style. Ideal for animation projects, game development, character design references, children's books, educational materials, stickers, branding, wildlife content, and animal-themed illustrations. Isolated on white background. Reference vectors
Cute cartoon chicken character turnaround sheet showing front, back, and side views. Friendly farm animal mascot design with clean vector style. Ideal for animation, game development, character design, educational materials, children's projects, stickers, and branding. Isolated on white background. Reference vectors
Cute cartoon chicken character turnaround sheet showing front, back, and side views. Friendly farm animal mascot design with clean vector style. Ideal for animation, game development, character design, educational materials, children's projects, stickers, and branding. Isolated on white background. Reference vectors
A glowing light bulb contains 15W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A glowing light bulb contains 15W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
Several houses sit beneath a sun to depict a residential community. This social concept can accompany community initiatives, cooperation programs and shared projects. It offers a visual reference for discussing how people participate, support one another or work together. Reference vectors
Several houses sit beneath a sun to depict a residential community. This social concept can accompany community initiatives, cooperation programs and shared projects. It offers a visual reference for discussing how people participate, support one another or work together. Reference vectors
A clock above a moving bus depicts timed public transport services. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A clock above a moving bus depicts timed public transport services. This mobility design can identify a mode of travel in transport guides, journey planning and service information. It provides a compact visual reference for movement between locations. Reference vectors
A glowing light bulb contains 12W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A glowing light bulb contains 12W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
Three people stand on platforms of different heights to depict unequal starting positions. This social concept can accompany community initiatives, cooperation programs and shared projects. It offers a visual reference for discussing how people participate, support one another or work together. Reference vectors
Three people stand on platforms of different heights to depict unequal starting positions. This social concept can accompany community initiatives, cooperation programs and shared projects. It offers a visual reference for discussing how people participate, support one another or work together. Reference vectors
A glowing light bulb contains 10W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors
A glowing light bulb contains 10W lettering to identify its electrical power rating. The lighting motif can accompany lamp specifications, electrical equipment information and household energy guides. It provides a compact visual reference when explaining illumination and power use. Reference vectors