... follow a specific path. As water poured out through the spout of the first container, Tyndall directed a beam of sunlight at the path of the water. The light, as seen by the audience, followed a zigzag path inside the curved path of the water. William Wheeling, in 1880, patented a method of light transfer called "piping light."" Wheeling believed that by using mirrored pipes branching off from ... developed for other reasons. For example, the first fiber optic light sources were derived from visible indicator LEDs. As demand grew, light sources were developed for fiber optics that offer...

• Word Count: 1457
• Approx Pages: 6
• Grade Level: Undergraduate

... position that would normally be occupied by a gallium atom. This makes the material emit light with a longer wavelength than normal. Light is produced in semiconductors such as GaAs when electrons in the material lose some energy: this energy is converted into a photon of light. Electrons on the arsenic anisette defects can lose energy in smaller packets than those in ... generally more expensive than Germanium and ZnSe. GaAs is Diamond Turntable. Gallium arsenide is used in the manufacture of light-emitting diodes (LEDs), which are found in optical communications and control systems. G...

• Word Count: 1699
• Approx Pages: 7
• Grade Level: Undergraduate

... are the most basic units of light. Atoms release light photons when their electrons become excited. If you've read How Atoms Work, then you know that electrons are the negatively charged particles that move around an atom's nucleus (which has a net positive charge). An atom's electrons have different levels of energy, depending on several factors, including their speed and distance from the ... for automatic landing systems for aircrafts. Military use of lasers involve the illumination of a target from an aircraft and an air-dropped bomb which contains an optical seeker. As the bomb des...

• Word Count: 1647
• Approx Pages: 7
• Grade Level: High School

... it NASA. LADARVision system uses an ultra-small beam of cool laser light - one that's less than a millimeter wide and a spot much smaller than the thickness of a single human hair. Using high-speed computer control the LADARVision system moves this tiny beam of light across the surface of the cornea very rapidly in a tiny, non-sequential and ... I the long run the procedure will pay for its self. It is hard to believe that lasers have come so far. From little beam of useless light to weapon guidance systems and even to help you and me see better. It is hard to say were lasers will go nex...

• Word Count: 1801
• Approx Pages: 7
• Grade Level: High School

... Light reflects from the flat surfaces, not the pits. So a photo detector reads what is reflected and sends the 0's and 1's to the CPU. This is simply binary code, and is how the CPU interprets data. CD-ROM drives come in many styles. They are both external and internal. They also come in different speeds. The speed is denoted in terms of ... how much faster it is than a standard audio CD player. Therefore a 2X drive is twice the speed of your stereo's CD player, and so on. Technology has advanced quite a bit. ... discussed above, and being that there is no alteration in the surface to r...

• Word Count: 2190
• Approx Pages: 9
• Grade Level: High School

... the laser to do precision welding in glass tubes such as resistors, diodes, transistors, and many other microchips. This has enabled computer companies to decrease the size of the computer and increase the processing speed of the computer. Mining Another area in industry where lasers are used is mining. They use the laser to precision digging and drilling. Mine safety people use lasers ... disharmonious with on another because they are traveling from different paths. The film then records the interference pattern, between the two light beams, which is the hologram. To view the hologram ...

• Word Count: 1416
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... 2 1 Introduction 2 Report 2 2 How a CD stores Information 2 2.1 CD Writeables 3 2.2 CD Re-Writeables 3 3 How a Floppy disk store information 4 3.1 What is a floppy disk made of? 4 4 Uses of floppy disks and CDs 5 5 Comparison 5 6 Conclusion 6 Report on how CDs and Floppy disks store information. 1 Introduction In this report I will explain how CDs and floppy disks store information, the ... the same rate as it does when the player is reading it. This means it would take you about 60 minutes to record 60 minutes of music. At 2x speed, it would take you about half an hour to record 60 minu...

• Word Count: 2087
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School