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 | Some questions about humidity and storing DVDs in a closed cardboard ...
This discussion centers on the effects of humidity on storing DVDs and electronic components in closed cardboard boxes. It highlights that moisture can enter these containers during humid weather, and questions whether transitioning to a hot and dry climate (31-35°C) will evaporate the moisture from the items inside.
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 | How does the mechanism of a dual layer DVD read the data from both ...
Study "Optical physics: Depth of Field and its applications" Explore "How data is encoded and read on DVDs and CDs" Learn about "Opto-electronic devices and their role in data retrieval" Optical engineers, hardware developers, and anyone interested in the technical workings of dual layer DVDs and optical data storage technologies.
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 | CD Players: How Do They Interfere? - Physics Forums
The "reference beam" in the case of CDs and DVDs is the part of the laser beam that is reflected from the surface of the disk (aka the "land"). THe beam that goes into the pits will travel a total extra distance of 1/2 a wavelength through the plastic (so the depth of the pit must be 1/4 wavelength in the plastic).
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 | Why is there a spectrum on the back of a CD or DVD?
The spectrum observed on the back of a CD or DVD is a result of diffraction, where the tracks and sectors on the disc act as a diffraction grating. This phenomenon occurs when light bends around the edges of these microscopic structures, leading to the overlapping of various colors in a continuous spectrum. The discussion confirms that the correct explanation for this visual effect is indeed ...
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 | The Many Faces of Topology - Physics Forums
Topology is a branch of mathematics that encompasses many different parts. It is sometimes even difficult to see what these branches have in common or why they are all called topology.
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 | Kinematics equations: Prove that a=vdv/ds • Physics Forums
The discussion centers on proving the equation a = v dv/ds, where a represents acceleration, v is velocity, and s is displacement. The participants clarify that velocity v is a function of time and space, specifically v = v (x, t), and emphasize the importance of using the chain rule for differentiation. They conclude that while velocity is not constant, it can be expressed as a function of ...
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 | Why Do Longer Wavelengths Go Slower in Glass? - Physics Forums
The discussion centers on the phenomenon of light refraction in glass, specifically addressing why longer wavelengths travel slower than shorter wavelengths. Participants clarify that this behavior is attributed to the material properties of the prism rather than gravitational effects, which are wavelength-independent. Richard Feynman's classical explanations of light and refraction are ...
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 | How to load programs to computer without a CD or DVD drive.
This discussion provides a comprehensive guide on how to load programs onto a laptop without a CD or DVD drive by creating and using ISO image files. Users can create an ISO file from a DVD using software like BurnAware and then mount this ISO on their new laptop using virtual drive tools such as Daemon Tools Lite. The process involves creating an ISO image, mounting it to a virtual drive, and ...
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