When you rip DVDs, you rip the raw video from the disc, then you convert it to the size and format you want to use. A DVD holds about 4 GB or 8 GB (Depending on whether it’s a single-layer disc or a dual-layer disc), and a Blu-ray anywhere from about 25 GB to over 100 ...
p56 X射线如何透视体表 How X-rays see through your skin。听TED演讲,看国内、国际名校好课,就在网易公开课
Many people have a large collection of old DVDs, and some are still renting movie DVDs online from Amazon or Netflix from time to time. To copy DVDs to your computer is a good way to archive the video files according to years, genres and actors. After digitizing to your PC, you can ...
They're two-dimensional surfaces that show absolutely precise, three-dimensional images of real objects. You don't even have to wear special glasses or look through a View-Master to see the images in 3-D. If you look at these holograms from different angles, you see objects from different...
You'll find them in everything from CD players to dental drills to high-speed metal cutting machines to measuring systems. Tattoo removal, hair replacement, eye surgery — they all use lasers. But what is a laser? What makes a laser beam different from the beam of a flashlight?
It also includes X-rays and visible light. 2006 © HowStuffWorks.com According to pet psychics, electromagnetic energy surrounds and penetrates everything in the universe, much like the force in "Star Wars." This energy is part of the radio spectrum, but scientists haven't figured out ...
Solar Filter: a certified ISO 12312-2 solar filter is needed to protect your eyes, camera, and lens from harmful UV rays. Select a filter that fits the size of your lens and never view or photograph the Sun without a proper solar filter. ...
Yes, there are several computational methods to model diffuse reflection in 3D rendering. One widely used technique is called Monte Carlo ray tracing, which simulates how light bounces off surfaces in a scene by tracing rays and calculating their interactions. Another method, known as radiosity, ...
The picture quality is said to be excellent and there is no blooming. CID cameras cover a broad spectrum from near infrared to ultraviolet. The pixels do not have to be read out instantly, thus integration of low light levels over a long time is possible [34, 33]. CID cameras are much...
Allows for greater range of colors for clearer view At the most basic level, a welding helmet lens is certified to protect the welding operator from the ultraviolet (UV) and infrared (IR) rays present in the welding arc. In addition to protecting welders from these harmful rays, ...