Animal echolocation extremely narrow beams and many receivers to localize a target (multibeam sonar), animal echolocation has only one transmitter and two receivers (the ears) positioned slightly apart. The echoes returning to the ears arrive at different times and at different loudness levels, depending on the position of the object generating the echoes. The time and loudness differences are used by the animals to perceive distance and direction. With echolocation, the bat or other animal can see not only where it is going but also how big another animal is, what kind of animal it is, and other features.. At the most
Orpheus with Clay Feet Orpheus with Clay Feet "Orpheus with Clay Feet" is a science fiction short story by American writer Philip K. Dick, originally published in 1964 in "Escapade" magazine. The story has a self referential time travel theme, and was published under the pen name "Jack Dowland". The main character is Jesse Slade, a bored man living in 2040 who visits a time travel tourism agency for a vacation. The agency offers him a trip to the past where he can act as the muse for a famous artist of his choice. Slade chooses to inspire his favorite science fiction author of