A photon is produced whenever an electron in a higher-than-normal orbit falls back to its normal orbit. During the fall from high energy to normal energy, the electron emits a photon -- a packet of energy -- with very specific characteristics.
Sleeping Dogs. Sleeping Dogs is an open-world third person action game developed by United Front Games and published by the Square Enix London Studios. Originally, the game was going to be the third in the True Crime series, but Activision canceled the game on February 9, 2011.
The phrase let sleeping dogs lie means to leave a situation alone  or not to start trouble where there is not any already. The  earliest use of the phrase is found in a Fr â¦ ench proverb which dates  back to the 14th century.