X-Ray Diffraction: A researcher is using x-rays to investigating a cubic crystal. He is looking at Bragg reflection from the planes parallel to the cube faces. He finds that when using x-rays with a wavelength of 0.165 nm, a strong first maximum occurs when the beam makes an angle of 23.5° with the planes. What is the spacing of adjacent atoms in this crystal?
Fill in the blank(s) with the appropriate word(s).
0.207 nm
You might also like to view...
Seyferts have properties that lie between quasars and normal spiral galaxies
Indicate whether the statement is true or false
What do astronomers generally believe about the origin of Mars's moons?
a. They formed with the planet out of the protoplanetary material. b. They formed elsewhere and were captured at a later time. c. They were ejected from Mars during its formation. d. They were once a single moon and a later catastrophic event broke them in two.
A student is sitting on the right side of a school bus when it makes a right turn. We know that the force of gravity acts downwards and a normal force from the seat acts upwards. If the student stays in place when the bus turns, we also know that there must be
a. no other force on the student. b. a force parallel to the seat directed forward on the student. c. a force parallel to the seat directed to the left on the student. d. a force parallel to the seat directed to the right on the student. e. a force parallel to the seat in a direction between forward and left on the student.
Suppose we synchronize two atomic clocks at a point at 45° south latitude, and then move one clock directly north to the earth’s equator and the other directly south to the south pole, where they remain for some years in climate-controlled enclosures that keep them at the same temperature and humidity. We then reunite the clocks at the origin point and compare them again. Which (if either) has registered a shorter time between the synchronization and comparison events?
A. The clock at the equator B. The clock at the south pole C. Both clocks read the same time