A beam splitter is an essential part of the Michelson interferometer. Which of the following best describes how it works?
1.It is an electronic device which, like a train switch, directs half of the light it receives up, and the rest straight ahead.
2.It is a 45° angle mirror which reflects half the light sideways and lets the other half through.
3.It is a mirror that rotates at the light source's frequency, such that half the light it receives is reflected upward, and the other half is let through.
4.It is much like a double slit, but one of the slits directs the light upwards.
2
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A galvanometer has an internal resistance of 100 ? and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?
A) 50.0 ? in series B) 50.0 ? in parallel C) 75.0 ? in parallel D) 100 ? in series E) 100 ? in parallel
Relate Mercury's scarps to the differentiation process
What will be an ideal response?
A body in orbit about a planet is a(n) ________
Fill in the blank(s) with correct word
The time the Moon takes to orbit the Earth one time is the same amount of time as the lunar phase cycle
a. True b. False Indicate whether the statement is true or false