What is the longest lasting synthetic periodic element?
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Who first detected radio waves?
What is Convex lens ?
How ate the weather forecasts made ?
while climbing a hill we bend forward please explain the reason for bending
At what temperature does the filament of electric bulb glows ?
Explain reflection of light?
Explain what is a positron?
Tell me what is radium used for?
explian construction and working of various dye lasers
Tell me what is ion pair energy?
Is the electric field constant or does it vary with time in dielectric materials?
What is the Boiling ?