particle like nature of light

Further experiments established the following properties of cathode rays. They travel in straight lines from the cathode to the anode. (When an object is placed in the path of a cathode ray in the discharge tube, the light gets blocked in the area of the object and fluorescence is seen..

Charge + 2 units - 1 unit 0 Velocity Nearly 1/10 th that of light Nearly same as that of light (0.03-5)x10 -13 J Same as that of light Energy (6 – 16)10 -13 J (0.03 - 5)x10 -13 J Same range as β particles (1 - 5)x1..

Sound is a form of energy. It is produced by the vibration of particles and it travels in a wave-like motion. The number of waves passing a point per second is called the frequency and its unit is Hertz (Hz). The pitch of the sound (high or low sounding) is measured by the freq..

In 1856, James Clark Maxwell proposed that light and other forms of radiant energy propagate themselves in the form of waves, through space. These waves have electric and magnetic fields associated with them and are called electromagnetic waves or electromagnetic radiatio..

. Another natural phenomenon related to the scattering of light is the red appearance of the sun at the sunset and sunrise. At these times the sunlight has to travel a large distance through the atmosphere. The blue and the neighboring colors are scattered away and the red ..

In 1924, de Broglie's suggested that all material objects including an electron have a dual character; they behave as particles as well as waves. The wavelength associated with a particle of mass 'm', moving with velocity 'v' is given by de Broglie's relation as: The discover..

Electron - Discharge Tube experiments These experiments were conducted in detail by J.J. Thomson and he studied the passage of electricity through gases at extremely low pressure in a cylindrical glass tube. It was discovered that at extremely low pressure, gases become conductors of e..

Introduction - Physicists love to look at something complicated and find in it, something simple and familiar. Here is an example. If you flip a baseball bat into the air, its motion as it turns, is clearly more complicated than that of a non-spinning tossed ball, which moves like a ..

Conclusion - Thus, this chapter on refraction helps us understand many natural phenomena like the twinkling of stars, the sparkling of diamonds, mirage etc. It also throws light on the working of the human eye and the defects of visi..

Introduction - Physicists love to look at something complicated and find in it, something simple and familiar. Here is an example. If you flip a baseball bat into the air, its motion as it turns, is clearly more complicated than that of a non-spinning tossed ball, which moves like a ..