代写assignment

代写价格:青蛙实验

代写价格:青蛙实验

在伽伐尼进行的一项实验中,这只青蛙在一台静电机器附近被解剖。在这期间,伽伐尼的助手不小心把手术刀碰到了青蛙腿上的神经。青蛙的腿跳了起来。伽伐尼重复了很多次。观察到类似的肌肉痉挛。当这只青蛙被挂在铜钩上,并被铁格子碰触时,它的腿偶尔会抽动。在这之后,伽伐尼把每一种金属的长度连接在一起,形成黄铜和铁弧,每当接触铁弧时,铁弧就会收缩。这被伽伐尼(Toumey & Christopher 426)称为“动物电”。人们假定电实际上存在于青蛙本身。人们认为,双金属电弧只是将青蛙的一部分电传导到神经,导致青蛙的腿跳了起来。这些实验后来被称为青蛙舞蹈大师。
《加尔文》最早的读者之一是意大利物理学家亚历山德罗·沃尔特。由于发现了电容、电势和电荷,他赢得了很高的声誉。他还因发现了孤立的甲烷气体而闻名。他复制了伽伐尼的作品。当他进行实验时,他得出了一些截然不同的结论。他说,在之前的实验中,电来自电弧中使用的两种金属,青蛙只是作为导体。他用浸过盐水的纸代替了青蛙的腿,并检测了水流。这Galvani挑战。在这些重要的实验之后,世界分成了两种观点,动物电和电对不同的金属。1799年,伏特进一步发明了伏打电堆,伏打电堆是由盐水浸湿的纸(玛格达林斯基、塔拉和布鲁克斯202)分离的两种不同金属组成的圆盘堆。这是世界上第一个电池,它导致了汽车铅酸电池的发明。

代写价格:青蛙实验

In one of the experiment conducted by Galvani, the frog had been dissected near a static electricity machine. During this, the assistant of Galvani accidently touched the scalpel to the nerve which was in the leg of the frog. On this, the leg of the frog jumped. This was repeated by Galvani multiple times. It was observed that there was a similar kind of muscle spasms observed. Occasional twitching had been observed in the leg of the frog when it was hung from the brass hook and were touched with the iron trellis. After this, Galvani joined the length of each and every metal together for the formation of the brass and the iron arc which led to the contraction of the iron arc whenever it was touched. This was called as “animal electricity” by Galvani (Toumey & Christopher 426). It was assumed that electricity actually existed in the frog itself. It was believed that bimetallic arc had only done the conduction of electricity from one part of the frog to the nerve, which caused the leg of the frog to jump. These experiments came to be known as Frog dancing master.
One of the earliest readers of Galvin was Alessandro Volta who was an Italian physicist. He had earned a significant reputation because of his discovery of the electrical capacitance, potential and the charge. He was also known for the discovery of the isolate methane gas. He did the replication of the Galvani’s work. When he conducted the experiments, he had made some of the very different conclusions. He stated that the electricity in the previous experiment had come from the two metals which had been used in the arc and the frog was acting only as a conductor. He replaced the frog’s leg with the paper soaked with brine and detected the current. This challenged Galvani. After these significant experiments, the world was divided in the two views, animal electricity and electricity versus dissimilar metals. In the year 1799, Volta further did the invention of the Voltaic pile which was the stack of discs consisting of the two different metals separated by the brine soaked paper (Magdalinski, Tara and Brooks 202). This was the very first battery of the world and it led to the invention of the automotive lead-acid batteries.