Regional Science Center Dehradun
This centre has a Science Park, which is well developed garden of science consisting of about 30 outdoor fully interactive, fun-filled exhibits that cover various scientific principles like vibrations, mathematics, perception, defying gravity, music, sound etc. The life and works of some prominent Indian Scientists can also be seen in this science park. This is an exposition without walls to provide an opportunity for the visitors, especially children, to explore scientific gadgets and learn about scientists while playing in the park. One can learn & experience science while playing with exhibits.
The human eye is an organ that reacts to light in many circumstances. As a conscious sense organ the human eye allows vision; rod and cone cells in the retina allow conscious light perception and vision, including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.
Electromagnets are magnets that can be turned off and on by controlling the progression of power. At the end of the day, when we switch on the power supply, they become magnets; when we switch them off, they are not. They are utilized to isolate the waste into magnetic and non-magnetic wastes, at a recycling facility. The reusing plants get a wide range of wastes and their activity would be simpler in the event that we can isolate the waste into different categories, for example, metals, plastic, glass, biodegradable, and so on. When the waste is isolated, it is simpler to reuse it, contingent upon the waste qualities (state, biodegradable waste to treating the soil unit or anaerobic digester, and so forth).