Gamma Rays Sulaxan Shanmulgalingam 13B Gamma radiation, also known as gamma rays, and denoted by the Greek letter g, refers to electromagnetic radiation of extremely high frequency and therefore high energy per photon. They typically have frequencies above 10 exahertz (or >1019 Hz), and therefore have energies above 100 keV and wavelengths less than 10 […]
Read more "The Electromagnetic Spectrum by year 12 physics students"X-rays Rahul Kotha 12R and Abbas Mohsen 12 G Introduction This report is about X-Rays. It will give an outline of the history of the discovery of the wave and the man who discovered it, Wilhelm Röntgen. It will explain how X-Rays are formed and it will look at the properties such as wavelength and […]
Read more "The Electromagnetic Spectrum by year 12 physics students"Ultraviolet Sujeethan Gnanathas 12B Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays, that is, in the range between 400 nm and 10 nm, corresponding to photon energies from 3 eV to 124 eV. It is so-named because the spectrum consists of electromagnetic waves with […]
Read more "The Electromagnetic Spectrum by year 12 physics students"Visible light Sarangan Kathirgamanathan 12V Introduction Visible light is part of the electromagnetic spectrum and like all electromagnetic waves it is a transverse waves which means it moves at right angles to the direction of propagation. It does not need a medium to travel. Visible light is the only part of the electromagnetic spectrum that […]
Read more "The Electromagnetic Spectrum by year 12 physics students"Infrared Radiation Amis Shanaz 12Y History Infrared was discovered in 1800 by astronomer William Herschel, the discovery of infrared depended on the use of detectors which did not include the human eye which is why Herschel described the new found radiation as ‘invisible light’ since it was not visible to human eyes. Physics Review- Volume […]
Read more "The Electromagnetic Spectrum by year 12 physics students"Microwaves Thanusiyan Jekanathan 12Y Microwaves are a form of electromagnetic radiation with wavelengths ranging from as long as one meter to as short as one millimetre, or equivalently, with frequencies between 300 MHz (0.3 GHz) and 300 GHz. http://en.wikipedia.org/wiki/Microwave http://ims2012.mtt.org/en/node/184 The existence of radio waves was predicted by James Clerk Maxwell in 1864 from his […]
Read more "The Electromagnetic Spectrum by year 12 physics students"Radio Waves Nicholas Savva 12I Radio waves are a part of the electromagnetic wave spectrum with frequencies of between 3 KHz and 300 GHz, and wavelengths of between 1mm and 1km. Like all the electromagnetic waves it has the same speed in a vacuum of 3 x E8 ms^-1 http://en.wikipedia.org/wiki/Radio_wave The frequency range of radio […]
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