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In what environment can light be completely stopped? Detailed answer

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Directory / Big encyclopedia. Questions for quiz and self-education

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In what environment can light be completely stopped?

The maximum possible speed of particles is called the speed of light in vacuum and is a constant. Outside a vacuum, however, light can travel at speeds well below this constant. There is a special aggregate state of matter, the Bose-Einstein condensate, in which light slows down most strongly.

Experimentally, light has even been completely stopped in the Bose-Einstein condensate of rubidium by the formation of stationary, non-shifting solitons.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

Where are babies named after the day of the week they are born?

In the culture of the peoples of the African state of Ghana, great importance is attached to the day of the week on which a person was born - it is believed that this has an impact on his entire future destiny. Almost all children receive their first or middle name according to this day. For example, Kofi Annan, former Secretary General of the United Nations, has the name Kofi meaning "Friday". And for the popular Chelsea footballer Michael Kojo Essien, the name Kojo means "Monday".

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