How radiation emitted from the body
Describe the procedure how radiation emitted from the body? Illustrate in brief.
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The body radiates energy via thermal conduction via the skin to the air, clothes, and so on around the body. The small amount of energy would as well be radiated as electromagnetic radiation with the peak wavelength directly associated to the Kelvin temperature of skin.
Calculate the hot and cold temperature after 25 orbits. Assume a 100kg spherical spacecraft made of aluminum. Assume that the spacecraft is in an equatorial orbit. How is calculation 1 different for a spacecraft in a 90 degree (polar) orbit?
Davisson-Germer experiment (C.J. Davisson, L.H. Germer; 1927): The experiment which conclusively proved the wave nature of electrons; diffraction patterns were examined by an electron beam penetrating into the nickel target.
Pauli Exclusion Principle (W. Pauli; 1925): No two similar fermions in a system, like electrons in an atom, can contain an identical set of the quantum numbers.
Describe when the intermolecular forces are strongest? Briefly state it.
Illustrate the difference between the cathode ray and beta ray?
Define Hertz or SI unit of frequency: Hertz: Hz (after H. Hertz, 1857-1894): The derived SI unit of frequency, stated as a frequency of 1 cycle per s; it therefore has units of s-1.
Briefly define or explain the cause of Brownian motion?
Explain Newtons laws of motion or Newtons first law, second law and third law of motion? Newton's laws of motion (Sir I. Newton) Q : Secondary electron image and back What is main difference between secondary electron image and the back scattered electron image? State briefly.
What is main difference between secondary electron image and the back scattered electron image? State briefly.
Describe the fundamental principles of the regulation? Briefly describe the principles?
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