Physics

In a sample of musical note the tone, which have minimum frequency is called fundamental tone. Except the fundamental tone all other tones are called…

Musical sound is pleasing to the ears while noise is a distasteful sound. Music has an enjoyable effect on ears and mind, whereas noise appears…

Intensity: The rate of flow of sound energy through unit area placed normal to the direction of propagation of sound is called intensity. Intensity of…

Tone: A musical sound having a single frequency is called tone. A musical sound, generally consists of a number of components having different frequencies, is…

A Polaroid is a material which polarizes light. The phenomenon of selective absorption is made use of in the construction of polariods. There are different…

A Polaroid is a material which polarizes light. It consists of microcrystals of herapathite. Each crystal is a doubly refracting medium, which absorbs the ordinary…

Bartholinus discovered that when a ray of unpolarised light is incident on a calcite crystal, two refracted rays are produced. This phenomenon is called double…

Nicol prism was designed by William Nicol. One of the most common forms of the Nicol prism is made by taking a calcite crystal whose…

R.A. Millikan (1868 1953) devised a method known as oil drop experiment (1906-14), to determine the charge on the electrons. 1-le found that the charge…

Crystals like calcite, quartz, ice and tourmaline having only one optic axis are called uniaxial crystals. Crystals like mica, topaz, selenite and aragonite having two…