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Optics
Determine expressions for Jones matrices for the following optical elements
a) Left-circular polarizer
b) half-wave plate with fast axis horizontal
c) Linear polarizer with transmission axis oriented at an angle of 60 with the vertical
a) Left-circular polarizer
b) half-wave plate with fast axis horizontal
c) Linear polarizer with transmission axis oriented at an angle of 60 with the vertical
Optics
I am a Technology teacher and we need help! We are trying to match up a small lens that a local lens grinding company told me was a +2. Internet research tells me that a +2 lens has an approx 500mm focal length ( a doctor at the lens place told me the same) I bought a lens with a 334mm focal distance I figured it might be close, but knew we would have to adjust for the difference. It almost works, but give us a bit too large of a focused image. I have found another lens with a 476mm focal length that is the right diameter. Question is, I am really looking for as close to a 500mm focal length lens as I can find, and disregard the +2 right? I assume that a true +2 IS 500mm and 500mm only?? or can a +2 have other focal lengths? I told the girl from Anchor I needed a plus two and what size, and she rec. the 334mm fl. Thanks for any input you can offer us!!! - Chris
Optics
refraction of light in water .. why when we look at the pool the image that we see is smaller than its real one .. i want to calculate this image . Given: n water = 1.33 , n air = 1 , OA = 30 cm ( OA is the real depth of the swimming pool ) i want to calculate OA' ( the image that I'm seeing when standing beside the pool
Optics
2. Refracting telescope
The lenses in a refracting telescope are seperated by 65 cm. If the final image is at infinity and has an angular magnification of 25X. find the focal lengths of the lenses.
the equation when the final image is at infinily is: angular magnification = - focal length of the objective/ focal
The lenses in a refracting telescope are seperated by 65 cm. If the final image is at infinity and has an angular magnification of 25X. find the focal lengths of the lenses.
the equation when the final image is at infinily is: angular magnification = - focal length of the objective/ focal
Optics
A 2.5 cm object is located 24.0 cm from an converging mirror with a focal length of 14.0 cm. calculate the image position and size
Optics
Is real and inverted image formed outside a concave mirror?if yes then why image is formed inside the bulging inward surface of spoon which is considered as concave mirror?
Optics
why newton's rings are circular
Optics
How to find the distance between the lens and the image if a 25 cm object is 5 cm from a convex lens that has a focal length of 15 cm.
Optics
A dentist uses a small mirror of radius 40 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 11 mm from the tooth, what is the magnification of the image?
Optics
The Optigone company that has the license for the "mirage" toy (http://www.liveleak.com/view?i=ad7_1186119597) claim the image is a hologram - whereas I think it is formed as a 'virtual' image in mid air from two face to face parabolic mirrors. Is it truly a hologram?
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#340153 on Dec 2023
#340153 on Dec 2023