By Lauren V. Jones
ISBN-10: 0313340757
ISBN-13: 9780313340758
This quantity within the Greenwood publications to the Universe sequence offers the main updated realizing to be had of the present wisdom approximately stars. Scientifically sound, yet written with the coed in brain, <i>StarS≪/i> is a wonderful first step for kids studying the interesting medical discoveries that proceed to increase our wisdom of the universe. <i>StarS≪/i> is geared up thematically to assist scholars higher comprehend those finest heavenly bodies.
<i>StarS≪/i> discusses all components of what's identified in regards to the topic. it's going to support scholar comprehend issues comparable to white dwarfs, neutron stars, pulsars, and black holes. and it'll resolution pupil questions corresponding to: Why do stars have diversified colours and the way are they labeled? How can we comprehend what stars are made from? How did scientists work out how stars evolved?
Read Online or Download Guide to the Universe: Stars and Galaxies (Greenwood Guides to the Universe) PDF
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Extra resources for Guide to the Universe: Stars and Galaxies (Greenwood Guides to the Universe)
Example text
The wavelengths associated with visible light (the light we see with our eyes) range from 400 to 700 nm. There are many other kinds of electromagnetic radiation. Some, you may have heard of before. Infrared is electromagnetic radiation with longer wavelengths and less energy than visible light (usually, this is considered to be the light with wavelengths from 700 nm to 1,000,000 nm or 1 mm). Infrared radiation is most often associated with the military use of night-vision goggles. Night-Vision Goggles The human body is at a temperature of about 300 K.
So there are also many electrons that are not bound to an atom in the cloud. These electrons What Is a Star? 10 The above diagram shows the Bohr model of the hydrogen atom. This model is named for its inventor, Neils Bohr. Bohr hypothesized that the electron of the hydrogen atom had specific “allowed” orbits where it could be. ” The modern use of this less-than-accurate model is in the orbitals (now called energy levels). Electrons can only have specific energies around their nuclei (for all atoms, not just hydrogen).
That is, most of the electromagnetic radiation that humans radiate is in the infrared part of the electromagnetic spectrum. 3 This is a diagram of the electromagnetic spectrum. There are seven main types of electromagnetic radiation; each is defined by a wavelength range. These types are called (in order from shortest to longest wavelength) gamma rays, x-rays, ultraviolet, visible, infrared, microwave, and radio radiation. Shown here are the different wavelengths that define each region of the electromagnetic spectrum.
Guide to the Universe: Stars and Galaxies (Greenwood Guides to the Universe) by Lauren V. Jones
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