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Calcite has a uniaxial indicatrix with a ellipsoid shape. The two permitted vibration directions (transmitting the ordinary and extraordinary rays), cause twinkling to be observed on rotation.

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16y ago

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What is the lustre of calcite?

calcite has vitreous lusture.vitreous lusture is similar to reflection shown by broken glass which is twinkling


What is twinkling effect?

The star sometimes appears brighter,and at some other time, fainter, which is the twinkling effect.


What effect causes twinkling of stars?

refraction


Which percussion instrument was the sound effect for Fred Flinstone's twinkling toes?

The sound effect for Fred Flintstone's twinkling toes was created using a marimba. The marimba's bright and resonant tones helped to convey the playful and whimsical character of Fred’s movements. This choice of instrument contributed to the overall lightheartedness of the show's sound design.


Does calcite show a double image?

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What effect does acid rain have on limestone buildings?

when the sulfurous, sulfuric, or nitric acids in polluted air react with the calcite in marble and limestone, the calcite dissolves.


What is the past continuous tense of twinkling?

Was/Were twinkling.


What causes the distortion of the light from stars that mean we see them twinkling?

The distortion of light from stars, causing them to twinkle, is due to the turbulence in Earth's atmosphere. As light passes through the varying densities of the atmosphere, it gets refracted in different directions, leading to the twinkling effect. Telescopes on high mountains or in space, above most of the atmosphere, can reduce this effect.


Does calcite bubble when acid is placed on it?

Yes, calcite will bubble when acid is placed on it due to its reaction with the acid. This reaction releases carbon dioxide gas, causing the bubbling effect.


Is twinkling of stars caused by reflaction?

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How many syllables in twinkling?

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What do you mean by blue stars shiver in the distance?

This phrase likely refers to the twinkling effect observed when looking at distant stars through Earth's atmosphere. The twinkling, or shivering, of blue stars is caused by the turbulence in the atmosphere bending and scattering the starlight as it reaches our eyes.