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.
Sleep Behavior and Health. Your dog's sleep behavior is indicative of his health. If a dog tends to sleep more, this may be a symptom for a disease. However, a bored dog tend to sleep more, so make sure you offer a lot of stimuli during the day: toys, activities, games or even another pet.