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Bragg's law (Sir W.L. Bragg; 1912)
While a beam of x-rays strikes at crystal surface wherein the layers of atoms or ions are separated regularly, the maximum intensity of the reflected ray takes place while the complement of the angle of incidence, theta, the wavelength of x-rays, lambda, and the distance among layers of atoms or ions, d, are associated by the equation
2 d sin theta = n lambda,
Where n is an integer.
Refractive Astronomical Telescope: It is an optical instrument which is used to see heavenly bodies such as stars, moon and planets is known as telescope. Astronomical teles
What do you understand by "Absorption coefficient"? which is a better absorber of sound, glass or fibre glass?
#question.introduction .
#what are the condition necessary for heat transfer to occur?
Motion of an object in a plane is called two dimensional (2-D) motions. For 2-D motion acceleration or velocity can be explained by two elements in any two mutually perpendicular d
Action and reaction with a roller skate Place a roller skate on a smooth floor. Step on the roller skate with one foot and take a step forward with the other. Observe that the
What are Solid core or multicore? It will depend on the use to that the optic is put and the actual installation conditions. Solid core optics has usually, a larger bending rad
Explain an inertial frame of reference and derive the Lorentz transformation equations formula. How it can be used in optical gyroscope?
magnetic devices & functions
Anode rays were discovered by: (1)Goldstein (b)J. Stoney (3)Rutherford (4)J.J. Thomson Ans: (1)Goldstein
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