India celebrates its National Science Day every year on February 28 to mark Dr. C.V. Raman’s discovery of the scattering of light, also known as the “Raman effect”.
On March 31, 1928, Nature published a letter from CV Raman, titled “A new type of secondary radiation.”
The report writes that, “in every case in which light is scattered by the molecules..., the diffuse radiation of the ordinary kind, having the same wave-length as the incident beam, is accompanied by a modified scattered radiation of degraded frequency.”
In simple words, there is a change of wavelength when light is scattered by different molecules. The changes depend on the molecules that are responsible for the scattering.
Why Science Day?
The Indian Constitution states that:
It shall be the duty of every citizen of India to develop the scientific temper, humanism and the spirit of inquiry and reform.
To encourage young minds and to show the importance of science in everyday life public speeches, science exhibitions and live demonstrations are conducted every year.
This year the theme for the day was "Science and Technology for a sustainable future."
Here is a list of what some of our readers have done for a better tomorrow
- Reducing the use of plastic bags and plastic containers
- Using paper judiciously. Moving to online payment methods and even reading the newspaper online.
- Closing leaky taps and switching off lights/fans when not in use
- Using bicycles or public transport.
- Use of water level sensor to sense water in storage tank and automatically switch pump off after tank is full there by reducing 100% water overflow problems.
- Using solid wastes from kitchen and cow dung as manure.
- Installing solar panels
- Using LED lights
- Harvesting rain water
