Mirrors Laser Mirror a very narrow beam of light from a laser is incident on a horizontal mirror at an angle of 58 degrees.?
the reflected beam strikes a wall at a spot 5.0m away from the point of incidence where the beam hit the mirror. how far horizontally is the wall from the point of incidence?
this is more of a mathematical problem than a physics problem...
we know that the angle of incidence is equal to the angle of reflection for all mirrors
hence the beam is reflected at 58 degrees from the vertical.
This allows us to draw a picture with the mirror on the x axis ... the vertical as the y axis and then a straight line going out at 58 degrees from the vertical
vertical wall
l000000000100l
l00000000100 l
l00000001000 l
l00000010000 l
l00001000000 l
l00158deg000 l
P----------------------------------- mirror
P is the point of incidence
using right angled triangles we can easily calculate the height of the vertical which is the distance between the point on the wall that the beam hits and the mirror
sin(58) = h/5.0
5.0sin(58)=h
h = 4.964m
or we could answer your question using the cosine
cos(58) = x/5.0
5.0*cos(58) = x
x = 0.5959m
to ensure no disambiguity x is the horizontal distance between the point of incidence and the wall
Micromachined Mirrors provides an overview of the performance enhancements that will be realized by miniaturizing scanning mirrors like those used for laser printers and barcode scanners, and the newly enabled applications, including rasterscanning projection video displays and compact, highspeed fiberoptic components. There are a wide variety of methods used to fabricate micromachined mirrors each with its advantages and disadvantages. There are, however, performance criteria common to mirrors made from any of these fabrication processes. For example, optical resolution is related to the mirror aperture, the mirror flatness, and the scan angle. Micromachined Mirrors provides a framework for the design of micromirrors, and derives equations showing the fundamental limits for micromirror performance. These limits provide the micromirror designer tools with which to determine the acceptable mirror geometries, and to quickly and easily determine the range of possible mirror optical resolution and scan speed. Author: Conant, Robert A. I. Series Title: Kluwer International Series in Microsystems Binding Type: Hardcover Number of Pages: 177 Publication Date: 2002/12/31 Language: English Dimensions: 9.66 x 6.34 x 0.57 inches
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Fun with the Dragon Laser and mirrors
Laser reflected off mirror in to my eye for like 3 seconds?
eye sore today like i played in snow on mountain without sun glasses i did this a day ago no symptoms of loss of vission should i be woried
well really wasnt a mirror it was a paint ball gun barell as shiny as a mirror
It's too late now. You will be totally blind in a short time. lasers cause blindness especially when reflected off mirrors as it intensifies the beam strength.
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