Looking directly at the sun can lead to permanent eye injury due to damage of light-sensitive rod and cone cells within the retina. There are two ways to look at the Sun safely: by observing the sun directly through a suitable filter, or by projecting the Sun’s reflection onto a piece of paper via handmade pinhole camera/ telescope. The present correspondence shows the specification for the development of an optical instrument for the direct observation of sun. For this device, commonly available solar control glass plates can be used. The design of this filter is based on the fact that both visible and UV radiation comply with the law of Reflection and Refraction of light. As light rays appeared on the glass plate, most of the rays pass through the glass after refraction. A portion of the incident ray is mirrored and goes out to the next glass panel, where the same thing is going to happen. Through this way, multiple glass plates reflect the light ray before diffuse light is received. Owing to the fact that diffuse reflection is responsible for the ability to see most illuminated objects, we will be able to see the dull image of sun directly through this filter during the solar eclipse. (LINK)
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Mechanism of new solar filter (The number of glass plates shown is for presentation purposes only) |
Cite this as :
Siddhant (2020): A new
filter for safe view of Solar
Eclipse. In: Mobo DF and Sakhi Z
(eds.) Proceeding of 2nd
International Conference on Innovative Studies of Contemporary Sciences: Applied Science. Tokyo Summit-2, August 17-19, 2020. Pp.126-128.