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Joseph Henry

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Q: Whos inisiels are JH. he was born in the 1800s and built an electro magnet that held 1 ton?
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Whose inisiels are JH. he was born in the 1800s and built an electro magnet that held 1 ton?

The answer to this question is obviously Joseph Henry who also built the first motors and was a secratary at the Smithsonian musuem in Washington D.C.


When was the first truck built?

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Canberra was a paddock in 1800s


What was the name most elaborate electro-mechanical computer ever built?

Mark I


Who built the Saint Augustine Florida lighthouse?

The St Augustine Lighthouse was built in the late 1800s by the American government to replace another lighthouse they had built in the early 1800s that was structurally undermined by beach erosion.


What advances in transportation were made in the early 1800s?

the car was built and in the very late 1800s company's started selling them


Can homopolar magnet work with any type of magnet?

Yes that works but first you should design a homopolar magnet because there are no homopolar magnets built, yet !


How were bridges constructed in the early 1800s?

Bridges built in the 1800s were typically constructed of wood or stone. Some bridges were also starting to be constructed of steel in the early 1800s.


When was the Cabrillo national Monument built?

The lighthouse was built in the 1800s. by Mrs. Staples class rm 24


What did Peter Cooper invent during the 1800s?

Peter Cooper designed and built the first steam locomotive in the United States in the 1800s.


When was the first igloo built?

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