Physics
A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to

Change in momentum
Change in acceleration
Outward pull on him
Inertia of motion

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Physics
It is dangerous to observe Solar eclipse with naked eyes because

All radiations from sun initiate chemical reactions in eyes
Infrared radiations from sun burn our retina
Ultraviolet radiations from Sun burn our retina
Cosmic rays reach eyes more during the eclipse

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