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11:29 Feb 20, 2009
English to Hebrew translations [PRO] Science - Astronomy & Space Additional field(s): Aerospace / Aviation / Space, Physics
English term or phrase:escape speed
Definition from physics.fortlewis.edu: The speed necessary for an object to escape the gravitational pull of an object. Anything that moves away from the object with more than the escape speed will never return.
When an object is traveling exactly at escape speed, it is in a parabolic orbit with the body at the focus of the parabola. A parabolic path is open; hence an object following such a path will never return to the body. Conservapedia
Black holes, having infinite density, have an infinitely large escape speed. But it turns out that the escape speed value depends on how far an object is from a body of mass. So there is a certain distance from a black hole where the escape speed just equals the speed of light. Are black holes real?
One somewhat counterintuitive feature of escape velocity is that it is independent of direction, so that "velocity" is a misnomer; it is a scalar quantity and would more accurately be called "escape speed". Space Wiki
Definition from Wikipedia: מהירות מילוט היא המהירות המינימלית הדרושה לגוף שאינו בעל כוח הנעה עצמי, כדי להשתחרר משדה כבידה של גרם שמימי.
אם מעניקים לגוף מהירות שהיא מעל לסף מהירות המילוט, הגוף ייזרק לחלל החיצון וימשיך ויתרחק מכדור הארץ לנצח. - Wikipedia
Yossi Rozenman Israel Local time: 20:45 Native speaker of: Hebrew PRO pts in category: 4
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