Colour perception, the physics of vision, electromagnetic spectrum

 

Deceptive CD 
(Marvin and Milo, ‘Do try this at home)   Instructions on how to make a CD that will spin and show colour mixing.
Computer Colours | Ngā Tae Rorohiko
(V.U.W. Awhina website) Computer and cell phone displays, TV sets, and other imaging devices use RGB technology (red, green, and blue dots) to simulate colours and make an image.
JNR SCI, PHY 2.2
Peripheral Vision | He Whiringa Kite Rewha
(V.U.W. Awhina website) An experiment showing that peripheral vision is mostly colour blind.
JNR SCI, PHY 2.2
Depth Perception | Te Whiringa Kitenga Hohonu
(V.U.W. Awhina website) A series of experiments illustrating binocular depth perception.
JNR SCI, PHY 2.2
Is it Really Yellow? | He Kōwhai Rūkahu?
(V.U.W. Awhina website) An introductory human colour vision experiment: The difference between perceptive and spectral colours is examined.
JNR SCI, PHY 2.2
Seeing Colours | Kitenga Tae
(V.U.W. Awhina website) Is it really true that the primary lights red and green combine to make yellow? Students explore this issue by comparing the behaviour of sound waves and light waves, learning how a combination of red and green “fool” the eye into seeing yellow by causing the same response in the cones. This resource would usually follow the introductory resource Is it Really Yellow?
JNR SCI, PHY 2.2
Human Eye Resolution | Te Kokinga o te Māhea o Ngā Whatu
(V.U.W. Awhina website) The angular resolution of the human eye is measured in a series of experiments: an easy to construct, astronomy-related demonstration/activity that illustrates the angular resolution of the human eye, colour sensitivity, and angular magnification.
JNR SCI, PHY 2.2

Human Eye Resolution and Colour Perception
Red and green LEDs blend to make yellow light when viewed from a distance

Webcam Dissection
Digital cameras are remarkably similar in construction to the human eye. The photos show a dissected webcam and reveal its inner workings and the similarity to the eye.

Temporal Colour Mixing
A square wave signal applied to a bi-directional LED demonstrates temporal mixing of colours: a light that flashes red-green-red-green rapidly will appear yellow.

Through the Looking Glass: RGB Technology
RGB video displays produce red, green and blue light in a range of intensities to imitate a range of colours. Diffraction grating glasses break up the light from a video display to show the red, green and blue components.

Near Infrared on a Camera (VUW)
While the eye is not sensitive to infrared radiation, many cell phone cameras, web cameras and inexpensive video cameras can image infrared light that is near the edge of visible.

Infrared on a Webcam (VUW)
Some webcams can be modified to extend its range further into the infrared. It can then “see” hot objects.

Thermal Camera (VUW)
An infrared camera with thermal imaging capability produces images in the midwave infrared and can be used to measure temperatures.