What if human vision were augmented to include an additional
What if human vision were augmented to include an additional 100 nm on either the infrared or the ultraviolet sides of the visible spectrum? What additional items or effects would we be able to perceive that we cannot now perceive?
The sensitivity of our vision is also dependent on the amount of light we can collect before processing it into an image. How would our perception change if we could speed or slow this process?
Choose one band of the electromagnetic spectrum other than the visible spectrum. Describe the physical principle behind the instruments used to detect light in this portion of the spectrum. How do physicists, astronomers or other scientists use this portion of the spectrum to increase our understanding of the world we live in?
Solution
1. If we are able to observe them, our vision will definitely at first identify new wavelengths coming from sun both in infrared and in ultra violet domain.
 2. Our eyes are just like a camera. It takes 13 milliseconds to process the image if any lesser time is taken then the image we see will have much lesser levels of colour saturation and reduced brightness. On the other hand if more time is taken then the image might also be blur.
 3. Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies from 300 GHz to as low as 3 kHz, and corresponding wavelengths ranging from 1 millimeter (0.039 in) to 100 kilometers (62 mi).
 Communication with Radio Waves takes help of transmitters and receivers. They use it for detection of new galaxies.
 Principle of receiver: It is used with an antenna. The antenna intercepts radio waves (electromagnetic waves) and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation.

