Recent content by tkm2002

"During October, 1971, four cesium atomic beam clocks were flown on regularly scheduled commercial jet flights around the world twice, once eastward and once westward, to test Einstein's theory of relativity with macroscopic clocks. From the actual flight paths of each trip, the theory predicted...

I still don't understand:frown: can you explain in detail?

Homework Statement In a water pipe, the light moves in the same direction of the water flow. It is determined that the speed of light is dependent on the speed of water flow. Does that violate the principle of relativity? Homework Equations The Attempt at a Solution why the...

I am not very understand. Can you express the equation?

But I do not how to compare them http://img98.imageshack.us/img98/6779/89062472.jpg T_0 = e^2CL T of L_0/2 = T_0^1/2 I do not how to write T of U_0/2 in terms of T_0

I do not know how to calculate and compare it

Homework Statement Suppose a tunneling current in an electronic device goes through a potential-energy barrier. The tunneling current is small because the width of the barrier is large and the barrier is high. To increase the current most effectively, what should you do? a. Reduce the width...

In general, a good absorbers of radiation are also good emitters. In commonsense, something that is should be a poor absorbers. For example, we dress a white shirt in summer. However, a experiment has done and shown that the radiation detected of black and white surface are very very...