Physics Ch 29
An ideal Polaroid will transmit 50% of incident sunlight. How much light will be transmitted by two ideal Polaroids oriented with their axes parallel to each other?
50%
When waves from a pair of closely-spaced slits arrive out of phase
a dark fringe is produced
The vibrational direction of an electron and the plane of polarization of the light it emit
are the same.
The polarization axes of glasses for 3-D viewing are
at right angles to each other.
Diffraction is evident when a wave passes the edge of an object. through a small opening.
both of these
Interference colors in a soap bubble is evidence that the soap film
both of these
A hologram is simply a
complex diffraction grating.
The device that spreads light into its component colors in a spectroscope is a
either of these.
Plane waves incident upon a barrier that pass through a small opening
fan out.
For radio reception in city buildings, diffraction is
helpful.
The glare seen from water is largely
horizontally polarized.
A pair of crossed Polaroids will transmit light
if a third Polaroid at about 45 degrees is inserted between the two
Light from two closely-spaced stars cannot produce a steady interference pattern due to
incoherence.
Newton's rings illustrate
interference.
Waves diffract the most when their wavelength is
long
A razor blade nicely shows diffraction fringes when illuminated with
monochromatic light.
Three-dimensional viewing was popular in the past with slide projectors. If the slides for left and right positions in the stereo projector are duplicates of each other
no depth can be seen.
The production of interference colors requires
none of the above
An inventor proposes to equip an office with a polarized source of background music and polarizing earplugs for non-listeners. His idea is
nonsense because sound cannot be polarized.
Consider the interference colors in a film of gasoline on a wet street. The water provides a
second reflecting surface.
When long-wavelength light is seen in the interference colors of a soap bubble, the wavelength being cancelled is relatively
short.
Interference is a property of
sound, light, and water waves.
What can exist in the same place at the same time?
two waves
Polaroid sunglasses reduce much glare by polarization axes that are
vertical.
