CONTINUOUS SPECTRUM:

White light is radiant energy coming from the sun or from incandescent lamps. It is composed of

light waves in the range 4000-8000 Å. Each wave has a characteristic colour. When a beam of white

light is passed through a prism, different wavelengths are refracted (or bent) through different

angles. When received on a screen, these form a continuous series of colour bands : violet, indigo,

blue, green, yellow, orange and red (VIBGYOR). This series of bands that form a continuous

rainbow of colours, is called a Continuous SpectrumWhite light is radiant energy coming from the sun or from incandescent lamps. It is composed of

light waves in the range 4000-8000 Å. Each wave has a characteristic colour. When a beam of white

light is passed through a prism, different wavelengths are refracted (or bent) through different

angles. When received on a screen, these form a continuous series of colour bands : violet, indigo,

blue, green, yellow, orange and red (VIBGYOR). This series of bands that form a continuous

rainbow of colours, is called a Continuous Spectrum

The violet component of the spectrum has shorter wavelengths (4000 – 4250 Å) and higher

frequencies. The red component has longer wavelengths (6500 – 7500 Å) and lower frequencies.

The invisible region beyond the violet is called ultraviolet region and the one below the red is

called infrared region

Thursday, 6 May 2021