Daily Archives: February 16, 2014

Gravitation and the theory of everything

Over the last several class periods, we have talked a lot about the force of gravitation. Incidentally, gravitation is considered one of the four fundamental forces of nature, along with weak force, strong force, and electromagnetic force. Interestingly, though, gravitation is the only one of these that is explained by a separate theory—the general theory… Continue reading

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The Invention of the Telescope

The telescope was most likely invented in 1608 by a German eyeglass maker named Hans Lippershey, although there is some uncertainty. Another eyeglass maker from the Netherlands, named Jacob Metius, filed for a patent soon after Lippershey and a third man, named Sacharias Janssen, later claimed to be the creator.  Despite these claims, Lippershey is […] Continue reading

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Many people know that tides rise and fall as a result of the Moon, but often times people are unaware that the Sun also exerts a tidal force on the Earth. Tides are caused by gravitational force, which depends on the mass of the objects pulling on each other and the distance between them. The […] Continue reading

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Hubble Space Telescope

The Hubble Space Telescope was launched in 1990 and is still in service today. Just as Galileo’s first telescope opened the door to a new world beyond what the naked eyes can see, the Hubble Space Telescope broke through heaven’s gates and showed us a world beyond the boundaries of space-time, capturing even images of […] Continue reading

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Constantly Falling

Contrary to popular belief, there is gravity in space, in fact gravity is everywhere. On the International Space Station, there is as much gravitational force as it is on Earth’s surface. But then… why are those astronauts (in the video) merrily floating around? Not to ruin the party or anything, but they are not floating […] Continue reading

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