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PaVG #3: The Legend of Zelda
OcktoByte posted a blog entry in Physics and Video GamesWelcome back! Today's just gonna be a simple discussion as to why the Mirror Shield from the Legend of Zelda games is inaccurate as to the way light works in real life. This is the Mirror Shield as shown in the game The Legend of Zelda: Ocarina of Time. This shield has appeared in several other incarnations in the series, but most share one feature. They reflect light in order to solve puzzles. Now, although it has a highly polygonal model, you can clearly see that the "mirror" surface is convex. In the games, the player reflects a straight beam of light when standing under a light source. However, due to the convex nature of the mirror, the light should be dispersed. The only way a straight beam of light would be achieved would be with a flat surface. A convex mirror disperses light, whereas a concave one brings it to a point. Most of the shields in the series act the same way. They are convex, but direct light in a straight path. That should conclude this post. Let me know your thoughts, and I'll talk to you next time!
UnstoppableEinstein had some pretty crazy theories about the universe. One of his most famous may be that no object may accelerate up to or beyond the speed of light. However, few know the implications of this startling discovery. One instance put across is the idea that when an object moves faster, it actually gains more mass. This is because all particles in the universe are said to exist within a field called the Higgs Field. This field is responsible for the mass of all objects in existence. The Higgs Field is an energy field, and when an object passes through it at a certain velocity, it gains mass accordingly. Because the speed of light is the maximum speed a particle can move at, it can be seen as infinite velocity. Therefore, for a particle to move at the speed of light in the Higgs Field would mean that this particle gains infinite mass. So, what would happen if two particles approaching the speed of light hit each other head-on? They would each have near infinite mass and velocity, and therefore momentum, so who would win? It’s the age old question: “What happens when an unstoppable force meets an immovable object?” Or I guess in this case, what happens when an unstoppable force meets and unstoppable force?
Super Fast Cameras
FizziksGuy posted a video in OtherResearchers at MIT have created a camera with a resolution of one frame per trillionth of a second, allowing them to film light as it travels.
Video Discussion: Super Fast Cameras
FizziksGuy posted a topic in Video DiscussionsName: Super Fast Cameras Category: Other Date Added: 2015-09-21 Submitter: FizziksGuy Researchers at MIT have created a camera with a resolution of one frame per trillionth of a second, allowing them to film light as it travels. Super Fast Cameras
Light as a Particle and a Wave
pavelow posted a blog entry in Blog Having Nothing to do with PhysicsLight is subject to a quantum theory called wave-particle duality. This theory proposes that matter exhibits both properties of a particle and properties of a wave. The experiment that shows light's wave-like properties is the double slit experiment. when light was shone through two slits close together, and a screen was placed behind the slits, the impact pattern didn't look the way one would expect a particle impact pattern to look like. After going though the slits, the light diffracted, creating a wave diffraction pattern on the screen, showing light's wave-like properties. Light's particle properties are shown in another experiment. Light is passed through "absorber" planes, which don't affect waves. however, when the light passed through the absorbers, the wave after going through the absorber was considerably weaker. This confirmed that light has some particle like properties. Light is neither particle nor wave and yet exhibits properties of both, which can be experimentally observed.
pavelow posted a blog entry in Blog Having Nothing to do with PhysicsWhat is Pavel time? Pavel time is the time right before a deadline when actual work gets done. How does this relate to physics? It relates specifically to Albert Einstein's theory of relativity. Part of the theory of relativity states that measurements of various quantities are relative to the velocities of observers. In particular, space and time can dilate. So, in real life, as an object approaches the speed of light, it gets squished and time slows down for the object. How does this relate to Pavel time? In my theory of relativity, as more work gets done more quickly, time slows down and allows me to finish whatever assignment I have before the deadline.
Fire Burnin' on the Dancefloor
oxy126 posted a blog entry in The Blog of SCIENCEIt's common knowledge that a blue flame is hotter than a red/orange frame. While I'm not entirely sure that is true, having never tested the fact with my own appendages, many reliable sources seem to say it's true. But why, really, is a blue flame hotter? The answer lies with a bit of science on the nature of "light". Light with higher frequencies (towards the blue/violet end of the spectrum) contains more energy than light towards the other end of the spectrum, the red/orange end (light in this case refers to all electromagnetic radiation - from gamma to radio waves). And when objects are heated, they radiate energy in the form of light. As you can see in the attached image, this pattern of radiation follows a predictable function dependent upon temperature and wavelength. While certain materials emit certain wavelengths better than others, the general trend is that, the hotter the object the is, the more power it will output at higher and higher frequencies. In other words, a blue flame is emitting more energy at higher frequencies because it is hotter. Theoretically, purple flames would be even hotter, and would most certainly look cooler. The big lesson is that there are plenty of ways to quench your curiosity about flammable objects with your eyes, and not your various limbs. Although I guess you can always try.
licrane posted a blog entry in Physics yeah!Kaleidoscopes use light and mirrors to reflect objects that create patterns. There are multitudes of different varieties and types, but they all follow the same basic principles of physics. To make a kaleidoscope, you would need some type of round, hollow material and two to four mirrors to put inside of it. Aluminum foil can also be used as a reflector. On one end of a kaleidoscope, there is an object container that holds the objects to be reflected. Then this can be closed off with plastic or glass. This layer of clear material not only holds the objects in, but also filters light through to reflect off of the objects. Some versions of the kaleidoscope toy rotate to easier change the position of the objects located inside. When you look through the hole of a kaleidoscope, light filters through the glass or plastic on the end of the device and then illuminates the objects and reflects them off of the mirrors or other reflective material. Your eye then sees these bouncing reflections, which creates the patterns that you see. This simple, but fascinating toy has brought joy and wonder into the lives of people for hundreds of years.
WS: Regents EM Spectrum
FizziksGuy posted a file in Waves