By passing current through a wire wrapped around an iron rod, william sturgeon invented the?
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What is the difference between diffraction and interference?
Explain application of optical fibers and sensors?
If a body is hung from a spring balance first at the poles and then at the Equator, why do the readings of the balance change ?
what is relation between magnetic and electricity and why?
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?
In general, alternating voltage varies between its maximum and minimum values 50 times per cycle. Why don't the circuit element show such fluctuation?
What is the wavelength of sound in air?
How do you calculate shaft power?
What is meant by energy spectrum of a black body? : quantum physics
Explain the index of refraction of air?
Explain the Friction and Equilibrium ?
What is photometry?