A hologram like the one shown here cannot be fully appreciated from pictures shown in a book. Why is this?

a. The colors are brighter in a hologram.
b. Textbook printing methods cannot reproduce any picture generated by laser light.
c. A hologram appears as a three-dimensional image to the viewer, but not by viewing the flat page of a book.
d. Information from each point in the scene is recorded in all points of the hologram.


c

Physics & Space Science

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1 THz = ?

A. 103 Hz B. 106 Hz C. 109 Hz D. 1012 Hz E. 1015 Hz

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If the inner accretion disk around a black hole has a temperature of 10^6 K, at what wavelength will it radiate the most energy? (Hint: From Wien's law, ?T =3,000,000 where ? is in nm and T is in K.)

a. 10^6 nm b. 3 nm c. 3 × 10^6 nm d. 1 nm e. 3 × 10^11 nm

Physics & Space Science

Orbital resonance also gives Europa an elliptical orbit, so it experiences tidal heating, too. However, Europa experiences less tidal heating than Io, because Europa __________ than Io.

a. is farther from Jupiter b. is much smaller c. is more perfectly spherical in shape d. contains much more ice

Physics & Space Science

The solar constant for Earth is

A) 0.7 kW/m2. B) 1.0 kW/m2. C) 1.4 kW/m2. D) more than 1.4 kW/m2.

Physics & Space Science