In astrophysics, an event horizon is a boundary beyond which events cannot affect an observer. The term was coined by Wolfgang Rindler in the 1950s. In 1784, John Michell proposed that in the vicinity of compact massive objects, gravity can be strong enough that even light cannot escape.
The only magnet you are able to find naturally is called a lodestone. This is a naturally magnetized piece of the mineral magnetite. But all the permanent magnets you buy has been refined and is usually an alloy, a combination of different metallic elements.
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Explanation:
In astrophysics, an event horizon is a boundary beyond which events cannot affect an observer. The term was coined by Wolfgang Rindler in the 1950s. In 1784, John Michell proposed that in the vicinity of compact massive objects, gravity can be strong enough that even light cannot escape.
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Explanation:
Permanent Magnets vs. Electromagnets:
The only magnet you are able to find naturally is called a lodestone. This is a naturally magnetized piece of the mineral magnetite. But all the permanent magnets you buy has been refined and is usually an alloy, a combination of different metallic elements.
hii...okk friendss....
lekin me ek government residential school me padhti honn...waha mobile phone allow nahi hai ...abhi to vacation chal rahi hai ...woh bhi khatm ho jayegi 27 ko...to fir mujhse baath kaise karoge..