How can you use a curved mirror to make a telescope? If possible, include a diagram. How can gravity affect light? Write down a relation expressing the mechanical advantage of a lever. How does fire generate light? How do you increase the mechanical advantage of a third-class lever?
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Lenses, like those in a telescope or in a pair of glasses, take advantage of refraction. A lens is a piece of glass or other transparent substance with curved sides for concentrating or dispersing light rays. Lenses serve to refract light at each boundary. As a ray of light enters the tr...
As shown from telescope-optics.net, at656nm a f10 to f15 Achro will generally have a bit superior spherochromatic aberration control compared to an identical aperture shorter focal ratio ED semi-APO or even full APO at that wavelength. The only exceptions appear to be the Petzval and Takahash...
But how does this work? Hoekstra continues: "Mass distorts space and time around it. You can measure that effect, even if you can't see the dark matter." He uses an enlightening analogy to explain this. "Compare it to a tank of water containing acoin. If you tap that container, the...
Michael Khan is a Senior Mission Analyst for the European Space Agency (ESA). His work involves studying the orbital mechanics for journeys to planetary bodies including Mars. How long does it take to get to Mars & what affects the travel time?
Does light ever slow down? Light moves more slowly when traveling through diamond than when moving through air, and it moves through air slightly slower than it can travel in a vacuum.(Image credit: Shutterstock) Light in a vacuum is generally held to travel at an absolute speed, but light...
What is a Barlow Lens?A Barlow is a negative (diverging) lens that is placed between the objective lens (or primary mirror — from now on these words will be used interchangeably) and the eyepiece of a telescope. It increases the effective focal length of an objective lens, thereby ...
Andreas Vesalius' made some significant contributions to Scientific Revolution. He was the first who had actual evidence of what a human body looked...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
time travel,teleportationand, of course, warp speed. But how does something like warp speed fit into reality and our universe? Is warp speed just a wacky science fiction device, or is it theoretically possible? How does it work in the "Star Trek" universe? For everything on warp speed, ...