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(of which 29 are Websites, 1 is a Videos, and 0 are Experiments)


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Spectral colours

In a rainbow or the separation of colors by a prism we see the continuous range of spectral colors (the visible spectrum).

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X-ray Spectrum of Elements on the Periodic Table

Interactive tool for students in atomic science, allowing comparison of different x-ray spectra with standard spectra of elements for identification of sample composition.

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Cosmic Background Radiation

A uniform background radiation in the microwave region of the spectrum is observed in all directions in the sky. It shows the wavelength dependence of a "black body" radiator at about 3 Kelvins ...

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Hydrogen Spectrum

The basic hydrogen energy level structure is in agreement with the Bohr model. Common pictures are those of a shell structure with each main shell associated with a value of the principal quantum ...

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hyperphysics

Visible Light

The frequency and wavelength of visible light is a very narrow band in the electromagnetic spectrum. Its wavelength lies between 400 and 750 nm

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The Electromagnetic Spectrum

NASA page about electromagnetic waves with descriptions of such waves and their uses.Covers radio waves, microwaves, infrared, visible light, ultraviolet (UV), x-rays and gamma rays.

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Earth Lessons and Classroom activities

Teachers can create their own lessons on Astrophysics Research, Artificial Earth Orbiting Satellite, Sine Waves, Electromagnetic Spectrum, Images of the Universe in Different Wavelengths, Satellite ...

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Physical Sciences Resource Center

The Physical Sciences Resource Center (PSRC) is a project of the American Association of Physics Teachers (AAPT) which provides teacher resources for the entire spectrum of learners.

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Black body

This site allows the temperature of the Black Body applet to be set in two ways. The applet will then show you the spectrum and the apparent color of the object. Temperature can also be related to ...

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Sir Owen Richardson

Sir Owen Richardson (1879 - 1959) worked on thermionics, photoelectric effects, magnetism, the emission of electrons by chemical action, the theory of electrons, the quantum theory, the spectrum of ...

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