How do humans see colour? micro-lesson
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How does light help us to see color? Light is made-up of tiny particles called photons and these produce different wavelengths, and different colors have different wavelengths. Here is the spectrum of light. Red has the longest wavelength whereas violet has the shortest wavelength. The wavelengths get slower as they go along the spectrum. When light shines on an object, some of the colors are absorbed and some of the colors are reflected. The reflected colors are the ones that we see. When the light first enters our eyes, it needs to pass through the cornea. That helps us to focus the light. Next, the light travels to the pupil which controls how much light we see. After that, it travels to the retina which has different cones and rods and helps us to see different lights and color. Once all of that is done, the optic nerve sends messages to the brain. Phew! What a journey.
Kids earn more screen time by answering fun educational questions.
Here are some example of questions about this video that kids may be asked in the 1Question app to earn screen time.
Select the correct sequence of colour entering the eye.1) Cornea, pupil, retina, optic nerve2) Optic nerve, cornea, pupil, retina3) Cornea, retina, optic nerve, pupil4) Pupil, cornea, retina, optic nerve
What colour has the longest wavelength?1) Red2) Orange3) Pink4) Green
Name the particles that make up light.1) Photons2) Photos3) Protons
What is the role of the cornea?1) To adjust the focus of light on the retina2) To produce hormones and enzymes3) To produce insulin4) To produce tear fluid
True or false: Wavelengths are faster as they go along the colour spectrum from red to violet.1) FALSE2) TRUE
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