... forms of radiation travel at the speed of light. Infrared radiation lies between the visible and microwave sections of the electromagnetic spectrum. Infrared waves have wavelengths longer than visible and shorter than microwaves, and have frequencies lower than visible and higher than microwaves. Infrared is broken into three categories. Near, mid and far infrared. ... infrared imaging is a very useful diagnostic tool. Infrared cameras are used for police and security as well as fire fighting and in the military. Infrared imaging is used to detect heat loss in buildings and testing ele...

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• Approx Pages: 3
• Grade Level: High School

... : For seeing, this is the only visible electromagnetic wave. Ultraviolet: For suntans X-Rays: for seeing broken bones. Gamma Rays: For treating cancer. Radio Waves To the Victorians, the telegraph was their equivalent to the internet; it allowed immediate communication to anyplace possible around the world. Nowadays we use radio signals ... and send emails and faxes. Some can even display whole movies sent to the phone. Infrared (IR) There are many uses for infrared. Infrared (heat) is given off by humans. This can be very useful, for example, in earthquakes; victims buried under rubble...

• Word Count: 741
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• Grade Level: High School

... universe. If a blob of hot plasma falling into a black hole does not have enough time to radiate away its thermal energy, then the heat will be dragged in along with the matter. "Its energy will never be seen by distant observers; it will be adverted: through the horizon ... and disappear," (Kaufmann 8). This leakage does not violate the law of conservation of mass-energy because the heat energy is incorporated into the mass of the hole. Also, a black hole cannot spin at an arbitrarily fast rate because any surface of ... collisions, the infalling matter can be unimaginably hot. At suc...

• Word Count: 1191
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... , microwaves, x-rays, and TV and radio transmissions are all kinds of electromagnetic waves. They are all same kind of wavy disturbance that repeats itself over a distance called the wavelength. The wave, or "disturbance," is in an invisible thing called the electric force field. ... understand electric forces, we have to learn something about charged particles like electrons and protons. Without these charged particles, there can be no electric force fields and thus no electromagnetic waves. What are electrons and protons? An electron is a particle with negative charge and not much mas...

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• Grade Level: High School

... this morning? Why were you able to grab your morning cup of coffee and dash out the door? Science says that the food digested into the body releases energy (caloric heat), which powers our cells, enabling our nerves to fire and muscles to contract. This explains the process, but how does this process occur? When the body dies, we cannot simply ... difficult for some to comprehend; similarly difficult is how sound works. According to the Merriam-Webster On-Line Dictionary, sound is "mechanical radiant energy that is transmitted by longitudinal pressure waves in a material medium (as air)...

• Word Count: 709
• Approx Pages: 3
• Grade Level: High School