For what the parabolic dishes are used?
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How is sound produced?
what are the passive two-wire elements?
While swimming, why do we press the water backward with our arms and hands ?
What is the role of transformer in a rectifier?
While at berkeley, melvin calvin used this radioisotope to decipher many of the complex processes of photosynthesis:
Why does oil rise up the wick of the capillary ?
Why the height of the mercury column is affected by the change in temperature ?
Explain what instrument is used to measure volume?
What is black body and what are its characteristics? : quantum physics
When thomas edison was promoting the wide use of direct current, this personal enemy of edisons was the chief proponent and expert in alternating current?
why copper is a bad conducter at low temperature?
How about the particle-wave duality? : quantum physics