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Tuesday 30 October 2012

TUNGSTITE

Tungstite is a powdery and earthy mineral. Its colour is yellowish green or bright yellow. It is soluble in alkaline solutions and not soluble in acidic solutions.


Sunday 21 October 2012

MICROWAVES

Microwaves are electromagnetic waves of wavelengths ranging from 30 cm to 0.3mm. Frequency range is 109Hz to 1012Hz.

Tuesday 16 October 2012

INTERFERENCE

The superposition of two or more light waves and redistribution of energies is termed as interference of light.

Thursday 11 October 2012

LASER

Laser(Light Amplification by Stimulated Emission of Radiation) is a light source which gives highly directional, coherent, monochromatic, intense light.

Wednesday 10 October 2012

ULTRASONICS


Ultrasonics are sound waves with frequency greater than that of human audibility limit, 20KHz.

Tuesday 9 October 2012

PERIGEE

Perigee-The point in a satellite's elliptical orbit that is closest to the earth, and at which the satellite's velocity is greatest.

FRACTAL

Fractal-a geometric shape that repeats itself, at least roughly, at all scales. Fractals are used for the complex modelling of clouds and other natural shapes.