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Four new inventions, designs, or ideas from the 1780s include the spinning jenny, a multi-spindle spinning frame that revolutionized the textile industry; the steam engine improvements by James Watt, which greatly enhanced the efficiency of steam power; the first manned hot-air balloon flight by the Montgolfier brothers in 1783, marking the beginning of modern aviation; and the discovery of oxygen by Joseph Priestley in 1774, which laid the foundation for modern chemistry and our understanding of gases.
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List four new inventions designs or ideas of the 1780s.?
1780: Bifocal glasses were invented by Benjamin Franklin 1783: invention of the hot air balloon 1784: the safety lock is invented by Joseph Bramah 1785: invention of a parachute by Blanchard
What were Four inventions of the agricultural revolution included?
Scythe horse drawn hoe horse drawn seed drill plough
What are some simple inventions that haven't been invented that I could make in four days?
Thousands of inventions surface daily, most are never entertained for mass production. A simple invention that could be done in just four days is a cell phone application to read the tone of your voice and select the right song to play for that particular mood.
Why the synchronous motor is always a salient pole machine ie why don't we use a cylindrical pole machine as a synchronous motor?
The speed of the machine is tied to the power supply frequency and the number of poles the machine has. It becomes impractical to make a round rotor machine with many poles, so machines that spin at low revolutions will typically be salient designs. A two or four pole machine could be round rotor designs.
What is a four input and gate?
A four input and gate is a logic gate with four inputs. The output is true only when all four inputs are true.
