ELEKTROMAGNETISCH SPECTRUM PDF

Transcript of Elektromagnetisch spectrum. Elektromagnetisch spectrum. Elektromagnetisch spectrum. Microgolven Infrarood Zichtbaar licht. Het Elektromagnetisch spectrum; Vragen • Vraag 1 wie heeft de röntgenstraling ontdekt? • Vraag 2 hoeveel Nobelprijzen kreeg Marie Curie. A. ▻ Atmospheric absorption spectra (1 C, 49 F) Electromagnetic spectrum illustrations (2 C, 85 F) Infrared spectrum (8 C, 44 F).

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For example, red elektromagnetiach resembles infrared radiation in that it can excite and add energy to some chemical bonds and indeed must do so to power the chemical mechanisms responsible for photosynthesis and the working of the visual system.

Microwave through far infrared.

Yellow fluorescent light spectrum. These are the most energetic photonshaving no defined lower limit to their wavelength. European regulations Europe has defined exposure limits that are recommended for member states.

However, inBritish physicist William Henry Bragg demonstrated that gamma rays are electromagnetic radiation, not particles, and inErnest Rutherford who had named them gamma rays in when he eoektromagnetisch that they were fundamentally different from charged alpha and beta particles and Edward Andrade measured their wavelengths, and found that gamma rays were similar to X-rays, but with shorter wavelengths and higher frequencies.

He directed sunlight through a glass prism to create a spectrum […] and then measured the temperature of elektromagneyisch colour.

Category:Electromagnetic spectrum – Wikimedia Commons

The last portion of the electromagnetic spectrum was filled in with the discovery of gamma rays. In artificial generation of radio waves, an electronic device called a transmitter generates an AC electric eelktromagnetisch which is applied to an antenna.

In a radio communication system, a radio frequency current is modulated with an information-bearing signal in a transmitter by varying either the amplitude, frequency or phase, and applied to an antenna. White light is a combination of lights of different wavelengths in the visible spectrum.

It can be elekfromagnetisch into three parts: An AP may have a typical maximum radiated power of mW or 20 dBm. However, most of the Sun’s damaging UV wavelengths are absorbed by the atmosphere before they reach the surface.

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Elektromagnetisch spectrum by Nicky ‘t M on Prezi

The laser frequency comb in action. They are also used for remote controland for industrial heating. By using this site, you agree to the Terms of Use and Privacy Policy. Unlike higher frequency waves such as infrared and light which are absorbed mainly at surfaces, microwaves can penetrate into materials and deposit their energy below the surface.

These relations are illustrated by the following equations:. Archived from the original on 6 January G—M List of colors: Microwaves are the main wavelengths used in radarand are used for satellite communicationand wireless networking technologies such as Wi-Fialthough this is at intensity levels unable to cause thermal heating. Cool Cosmos Classroom activities.

From Wikipedia, the free encyclopedia. Hertz also demonstrated that the new radiation could be both reflected and refracted by various dielectric media, in the same manner as light. Retrieved 5 March These behaved similarly to visible violet light rays, but were beyond them in the spectrum. When EM radiation interacts with single atoms and molecules, its behavior also depends on the amount of energy per quantum photon it carries. The modulation is similar to that used with radio waves.

Although at the low end of the band the atmosphere is mainly transparent, at the upper end of the band absorption of microwaves by atmospheric gasses limits practical propagation distances to a few kilometers. Frequency Hopping Spread Spectrum.

This, however, is not the actual radiation that is derived from the device, but the value that we use to make theoretical calculations. Visible light and near-infrared light is typically absorbed and emitted by electrons in molecules and atoms that move from one energy level to another.

One notable use is diagnostic X-ray imaging in medicine a process known as radiography. Analyzing the speed of these theoretical waves, Maxwell realized that they must travel at a speed that was about the elektrmoagnetisch speed of light. Exposure to these rays can be a health hazard, causing radiation sicknessDNA damage and cancer.

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electromagnetic spectrum

The Feynman Lectures on Physics, Vol. Hue Dichromatism Colorfulness chroma and saturation Tints and shades Lightness tone and value Grayscale. For example, consider the cosmic microwave background.

These photons were from Lyman series transitions, putting them in the ultraviolet UV part of the electromagnetic spectrum. Whenever electromagnetic waves exist in a medium with mattertheir wavelength is decreased. Views Read View source View history.

The Florida State University. Collective oscillation of charge carriers in bulk material plasma oscillation. The distinction between X-rays and gamma rays is partly based on sources: Now this radiation has undergone enough cosmological red shift to put it into the microwave region of the spectrum for observers moving slowly compared to the speed of light with respect to the cosmos.

The study of light continued, and elektromgnetisch the 16th and 17th centuries conflicting theories regarded light as either a wave or a particle.

The elektromagnetischh visual system processes the multitude of reflected frequencies into different shades and hues, and through this insufficiently-understood psychophysical phenomenon, most people perceive a bowl of fruit. Retrieved 4 March Direct link to value. The use of the radio spectrum elektromagnetiscn strictly regulated by governments, coordinated by a body called the International Telecommunications Union ITU which allocates frequencies to different users for different uses.

Before long, many uses were found for them in the field of medicine. Linguistic relativity and the color naming debate Blue—green distinction in language Color history Color in Chinese culture Traditional colors of Japan Human skin color.

Potencia y frecuencia girotron. Spectroscopy is used to study the interactions of electromagnetic waves with matter.