Vacuum tube

December seventh, 1941, 7:45 AM. As the Nazi war machine steamrolls its way through Europe, The United States of America (which has remained somewhat removed from the war) is in for a sudden, unthinkable, and very bloody shock. By the time the Japanese attack on Pearl Harbor is over, the Americans have suffered heavy casualties totaling 2,403 dead and 1,178 wounded, including 103 civilians, and the loss of 20 ships and 169 aircraft. This atrocity has made Japan’s intentions toward the U.S. very…

The primary test showing of an association between naturally visible piezoelectric marvels and crystallographic structure was distributed in 1880 by Pierre and Jacques Curie. Their analysis comprised of a decisive estimation of surface charges showing up on extraordinarily arranged precious stones (tourmaline, quartz, topaz, natural sweetener and Rochelle salt among them) which were subjected to mechanical anxiety. These outcomes were a sound representative for the Curies ' creative ability and…

2.3. Pharmacokinetics of (S)-ketoprofen 2.3.1. Blood sampling On the day of the study, rats were cannulated approximately 30 min before uric acid injection and 3 h before the drugs were administered. The animals were anesthetized and the caudal artery was cannulated with a PE-10 cannula (Clay Adams, Parsippany, NJ, USA) connected to a PE-50 cannula. The cannula was kept patent with heparinized saline solution and stopped with a needle. Rats were allowed to recover from anesthesia and…

NOVA’s “the Fabric of the Cosmos: Quantum Leap” with Brian Greene “Quantum Leap” not only explores how much the quantum atom has changed our view of the rules that govern our universe, but also how much is has, or will, benefit society. How did science arrive at the quantum atom, and what benefit did (or will) we gain from each of the developments that led us to the quantum atom? After the analytical evidence was gathered by Sir Joseph John Thomson from the scientists before him to create the…

It has been about 14 million years since mankind came into the world. In that long period of time, human beings have been continuously producing knowledge. The prompt said “The main reason knowledge is produced is to solve problems.”, and I mostly agree with it, but first I will discuss this statement from different perspectives using the examples from Natural Science and The Arts . In Natural Science, there are many inventions that were discovered to solve a problem. Many of today’s inventions…

Hacking A Computer Systems A movie “Algorithm: The Hacker Movie,” illustrates a view of a hacker life and what he or she does because he or she doesn’t care about the privacy and laws. According to the movie, it shows that “The hackers live by one rule: information should be free and everything can be simplified and coded and understood as information” (Documentary Storm). By the statement, we can assume that, the hackers don’t live socially like other people do. They may not go for dates or…

UNIT 11 ASSIGNMENT 2 Anjelina Qureshi P3 Average Beats per Minute I took 3 reading of my beats per minute (BPM) to ensure I got an accurate result. I took 3 readings of 30 seconds and then multiplied them by 2 to get 3 readings of 60 seconds. I took my readings whilst sitting down and not talking having not done any physical activity (walking etc.) in the 10 minutes before I took my readings. Repeats Beats per 30 seconds Beats per minute 1 35 70 2 38 76 3 42 84 Mean 38.3 76.6 Decline of…

In the United States law enforcement came a long way. Law enforcement developed in two fashions and its roots connect back to the policing in England. The two types of policing were both informal and communal, they were also both known as the “Watch,” or “The Big Stick”. The watch system was mainly molded from community volunteers. Their primary goal was to warn locals of danger. According to Gary Potter (2013), “Boston created a night watch in 1636, New York in 1658 and Philadelphia in…

23 g Na2C2O4 to form Na (NO3) 2. All solutions were mixed using distilled water. To filter out precipitates from the desired solution, they had to be poured over a beaker with filter paper being sucked by a vacuum. After the liquid was filtered, it was then poured into several different tubes and then placed in a centrifuge. The centrifuge caused the liquid to become more of a gel like substance, which was then placed in the oven to remove any excess liquid. The dried product was then placed in…

An innovator, immensely driven or perfectionist - Steve Jobs was considered to have all of these qualities and he had the drive to be the best. Though Jobs founded Apple purely with the idea to produce computers, the company later branched out to make many other successful products such as the iPad, iPhone, iPod, and Mac as well. Steve Jobs creatively led Apple’s success with a drive and focus on harnessing technology to build innovative products that won customers by enriching experiences. The…