What is photometry?
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Explain about Cosmic rays?
I’ve heard that in quantum physics a lot of fancy mathematical objects like hilbert spaces are used, and that in particular, measurable quantities are described by self-adjoint operators. Are these things related to what you have just explained? : quantum physics
Explain the Hard water?
In physics WHY WE USE MATHEMATICAL STEPS to describe many theorems
On an electric schematic, what does the symbol of a horizontal line interrupted by a saw tooth shaped line represent?
Considering the specific heat of aluminum is 0.21, iron is 0.10, and lead is 0.03, which metal will show the largest increase in temperature per calorie added to onegram of that metal?
What is the homogenous?
Why all voltage level are multiples of 11, like 220V, 440V, 1100V instead of 200V, 400V, 1000V?
How do fireworks turn into shapes like hearts and stars?
What is meant by reflection of waves?
Why does oil rise up the wick of the capillary ?
what are the Newtons principles? what is mean by gravitational force? what is mean by space technology? what is the use in space technology?