discovery x-rays

Calculation of Density of a Cubic Crystal from its Edge Length - Calculation of Density of a Cubic Crystal from its Edge Length. The edge length of a cubic crystal can be obtained from X-ray studies and knowing the crystal structure possessed by it so that the number of particles per unit..

) This model could not explain the large angle scattering of alpha particles by thin metal foils. Thomson won his Nobel Prize for his discovery of electrons in cathode rays and Rutherford for ascertaining the nature of nucleus and its radi..

) This model could not explain the large angle scattering of alpha particles by thin metal foils. Thomson won his Nobel Prize for his discovery of electrons in cathode rays and Rutherford for ascertaining the nature of nucleus and its radi..

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> kilometers from the earth. Sun's light travels at a great speed of 3x10 5 kilometers per second, and takes about 8 minutes to reach us. Light takes about 4.3 years to reach us from the next nearest star called Alpha Centauri. The sun is a mass of hot gases, about 109 times bigger in siz..

1. Diamond is the purest form of carbon. 2. It is the densest of all allotropes of carbon (specific gravity is 3.51). 3. Diamond's tetrahedral structure, makes it the hardest naturally occurring substance. It is brittle and transparent. 4. Pure diamond is colourless, but traces of dissolved impurit..

The position of a point in a plane is determined by two coordinates. The method is as follows: Two mutually perpendicular lines (straight lines) XX' and YY' are drawn as shown in the figure. These straight lines are termed as coordinate axes, the one (usually drawn horizontally) is called the ..

Rectangular coordinate system - The position of a point in a plane is determined by two coordinates. The method is as follows: Two mutually perpendicular lines (straight lines) XX' and YY' are drawn as shown in the figure. These straight lines are termed as coordinate axes, the one (usually drawn h..

Sun is the ultimate source of energy for organisms either directly or indirectly solar radiation before entering the atmosphere carries energy at a constant rate of 2 cal cm - 2 min - 1 , which is known as the solar constant. Solar spectrum is made up of short wave radiation, light and long wav..

Ionic compounds do not exist in the form of independent molecules but exist in the form of ions in crystalline solids, according to X-ray studies. These ions are arranged to form the crystal lattice in definite geometric pattern. For example, in NaCl crystal, each Na + ion is surrounded..