# Visible Spectrum

\$0.00

This diagram is about sunlight, the visible spectrum and which wavelengths of electromagnetic radiation correspond with the different colours we see in the world.

The diagram shows that wavelengths of light within the visible spectrum correspond with the different colours we see in the world.

Notice that:

• The white arrows in the diagram represent the Sun emitting sunlight at every wavelength of the visible spectrum.
• The term white light is used when all colours of the visible spectrum are mixed together.
• The coloured arrows represent six bands of wavelengths of visible light corresponding with red, orange, yellow, green, blue and violet.
• The list on the left shows the range of wavelengths corresponding with each band of colour.
• The red arrow, for example, corresponds with wavelengths between 700 nanometres and 620 nanometres.
• Red is the colour an observer sees if any wavelength in that range strikes a neutral coloured surface.
• The scale along the bottom is marked in nanometres and shows the visible spectrum divided into coloured bands.
SKU: N/A Category:

## Visible Spectrum

#### Visible Spectrum

###### TRY SOME QUICK QUESTIONS AND ANSWERS TO GET STARTED
The visible spectrum is the small part of the electromagnetic spectrum our eyes are tuned to.
Yes! The visible spectrum is composed of wavelengths between 390 to 700 nanometers and each wavelength is associated with a different colour.
The relationship between wavelength and colour is that wavelength is a property of electromagnetic waves whilst human observers see different wavelengths as different colours.
No! The visible spectrum is just the small part of the electromagnetic spectrum our eyes are tuned to.

• This diagram is about sunlight, the visible spectrum and which wavelengths of electromagnetic radiation correspond with the different colours we see in the world.
• The diagram shows that wavelengths of light within the visible spectrum correspond with the different colours we see in the world.
###### Notice that:
• The white arrows in the diagram represent the Sun emitting sunlight at every wavelength of the visible spectrum.
• The term white light is used when all colours of the visible spectrum are mixed together.
• The coloured arrows represent six bands of wavelengths of visible light corresponding with red, orange, yellow, green, blue and violet.
• The list on the left shows the range of wavelengths corresponding with each band of colour.
• The red arrow, for example, corresponds with wavelengths between 700 nanometres and 620 nanometres.
• Red is the colour an observer sees if any wavelength in that range strikes a neutral-coloured surface.
• The scale along the bottom is marked in nanometres and shows the visible spectrum divided into coloured bands.
###### Remember that:
• Objects appear to be different colours to an observer depending on their wavelength.
• The name given to light that contains all wavelengths of the visible spectrum is white light.
• When all wavelengths contained in white light reflect off a neutral-coloured surface then the object appears white to an observer.
• When a narrow band of wavelengths reflect off a neutral-coloured surface then the object appears coloured to an observer.
• The colour an observer sees depends on the wavelengths of visible light emitted by a light source and on which of those wavelengths are reflected off an object.
• Although a human observer can distinguish between many thousands of wavelengths of light in the visible spectrum our brains often produce the impression of bands of colour.

#### Some key terms

Wavelength is a measurement from any point on the path of a wave to the same point on its next oscillation. The measurement is made parallel to the centre-line of the wave.

The perception of colour by an observer results from properties of light that are visible to the human eye. The visual experience of colour is associated with terms like red, blue and yellow.

Visible light is the range of wavelengths of electromagnetic radiation perceived as colour by human observers.

• Visible light is a form of electromagnetic radiation.
• Other forms of electromagnetic radiation include radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays.
• Visible light is perceived by a human observer as all the spectral colours between red and violet plus all other colours that result from combining wavelengths together in different proportions.
• A spectral colour is produced by a single wavelength of light.
• The complete range of colours that can be perceived by a human observer is called the visible spectrum.
• The range of wavelengths that produce visible light is a very small part of the electromagnetic spectrum.

A nanometre is a unit of measurement of the wavelength of electromagnetic radiation.

The electromagnetic spectrum includes electromagnetic waves with all possible wavelengths of electromagnetic radiation, ranging from low energy radio waves through visible light to high energy gamma rays.

• SLIDES are optimized for viewing on-screen.
• ILLUSTRATIONS are optimized for printing on A4 pages in portrait format.
###### SLIDES
• Slides are available in JPG and AI (Adobe Illustrator) file formats.
• Titles: Slides have titles.
• Backgrounds: Black.
• Size: 1686 x 1124 pixels (3:2 aspect ratio).
###### ILLUSTRATIONS
• Illustrations are available in JPG and AI two file formats.
• Titles: No titles.
• Backgrounds: White.
• Size: 1686 x 1124 (3:2 aspect ratio). So all illustrations reproduce at the same scale when inserted into Word documents etc.
• Labels: Calibri 24pt Italic.

#### File formats: JPG & AI

• JPG (JPEG) diagrams are 1686 x 1124 pixels (3:2 aspect ratio).
• If a JPG diagram doesn’t fit your needs, you can download it as an AI (Adobe Illustrator) file and edit it yourself.
• JPG files can be placed or pasted directly into MS Office documents.
• All AI (Adobe Illustrator) diagrams are 1686 x 1124 pixels (3:2 aspect ratio).
• All our diagrams are created in Adobe Illustrator as vector drawings.
• Save as or export AI files to other formats including PDF (.pdf), PNG (.png), JPG (.jpeg) and SVG(.svg) etc.

#### Spelling: UK & US

We use English (UK) spelling by default here at lightcolourvision.org.

###### COPY & PASTING TEXT
• After copy/pasting text please do a spell-check to change our spelling to match your own document.
• Download AI versions of diagrams to change the spelling or language used for titles, labels etc.
• We are adding American English (US) versions of diagrams on request. Just contact us and let us know what you need.

Light, Colour, Vision & How To See More (https://lightcolourvision.org) : Copyright © 2015-2022 : MediaStudies Trust.

Unless stated otherwise the author of all images and written content on lightcolourvision.org is Ric Mann.

No part of this website may be copied, displayed, extracted, reproduced, utilised, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical or otherwise including but not limited to photocopying, recording, or scanning without the prior written permission of MediaStudies Trust.

###### EXCEPTIONS

Exceptions to the above statement are made for personal, educational and non-profit purposes:

Before downloading, cutting and pasting or reproducing any information, images or other assets found on lightcolourvision.org we ask you to agree to the following terms:

1. All information, images and other assets displayed and made available for download on the lightcolourvision.org website are copyright. This means there are limitations on how they can be used.
2. All information, images and other assets displayed or made available for download are solely and exclusively to be used for personal, educational and non-profit purposes.
3. When you find the resources you need, then part of the download process involves you (the user) ticking a box to let us (at lightcolourvision.org) know we both agree on how the material can be used.
4. Please contact [email protected] before considering any use not covered by the terms of the agreement above.

The copyright to all information, images and all other assets (unless otherwise stated) belongs to:

The Trustees. MediaStudies Trust
111 Lynbrooke Avenue
Blockhouse Bay
Auckland 0600
New Zealand
[email protected]

#### We love feedback

Your name and email address will be used solely to provide you with information you have specifically requested. See our privacy policy at https://lightcolourvision.org/privacy/.

## We welcome your feedback 🙂

Note: The feedback form records the URL of the current page

Thank you so much for your time and effort