Like many great science inventions of the past, the microwave oven was stumbled upon during another research project. The man who stumbled upon this great kitchen appliance that we use today, is Dr. Percy Spence, a self-taught engineer who worked for the Raytheon Corporation. Dr. Spence was working on a radar-related research project involving a new vacuum tube called a magnetron. It was during this research one day that he had noticed a candy bar he had in is pocket melted. Being a scientist this caught his curiosity. He preceded to try new experiments with the magnetron. He placed a few popcorn kernels near the tube and waited to see what would happened. It turned out that the popcorn kernels started sputter, crack and then pop in to popcorn all over the floor. The next day Dr. Spence tried another experiment, this time with an egg. He placed the egg next to the tube, and watched with another curious colleague. The egg started to tremor and quake. This was do to the quick change in temperature by the tube which was cause high pressures to arise inside the egg. The egg eventually exploded, but not before Dr. Spence's curious colleague went in for a closer look. As he did the the egg exploded covering his face with hot yolk! Dr. Spence, after the two experiments, concluded that the melting candy bar, the popping popcorn, and the exploded egg where do to exposure to low-density microwave energy. The First Oven... By late 1946 the Raytheon Company had already filed a patent proposing that microwaves be used to cook food. Engineers of the company went to work quickly trying to make a microwave oven for economical use. By 1947 the first commercial oven was placed on the market, after a test run in Boston r... ... middle of paper ... ... means that the waves just bounce off the interior walls and cannot escape while the oven is running. Therefore the only opportunity for the microwaves to escape is when you open the door. However there is nothing to worry about, because of what we stated earlier, and that is that microwaves tend to scatter and dissolve very quickly in the air. Safety Rules: 1) When a microwave oven is in use, stay away by at least an arm length. 2) When the microwave oven is empty, do not do any sort of operations to it. 3) Also, do not operate the oven if the door does not close or is in some way damaged. 4) Do not mess around with the fuse or safety interlock switches. Other Uses of Microwaves... Microwaves are not just used for cooking food, but for many other things as well. For example medicine, industry, science, consumer goods, and communication.
In the late 1970s, popular interactive candies for children were Pop Rocks and Space Dust. As children chewed these candies, tiny bubbles of pressurized carbon dioxide popped and fizzled, and resonated thunderously in the inner ear in a series of explosions that took place in the mouth. As described by children "it sounds like a storm in your mouth. If you swallow them fast, they crackle all the way down."
He had produced an unknown ray being emitted from the tube that could pass through the paper. He found that this new ray would pass through most objects, casting shadows of solid substances. He first investigated with his hand and was surprised when he saw his bones. His discovery would open up an exciting field for doctors because now it was possible to stu...
5. In light of this experiment, can you offer any advice to children in how to create a device that will keep an egg from breaking when thrown off of their school’s
Before assembling the materials, put on safety glasses FIRST, then prepare a clean, dry workspace (away from food) with all of the necessary materials.
It was Italian-born physicist and Nobel winner Enrico Fermi, and his colleagues at the University of Chicago who were responsible for this success (“Nuclear”).
If you need to inhabit it, don't use anything that does not come from within it.
One of the first inventions but more so of a discovery was the idea of nuclear fusion. It was discovered by a German scientist in february of 1939. This led to the invention of the atomic bomb. The atomic bomb was only used twice both times by the U.S. near the end of the war first on Hiroshima then on Nagasaki(Atomic Bomb).
Many inventions have impacted the world throughout history but in my opinion one of the most impactful one’s was the invention of the radio . This invention provided society with many things which include entertainment, communication, and easier access to information. Radio is still a central part of the society today but just like any other invention radio has an interesting history of how it progressed through time.
electricity, as a young boy. He became very fascinated with it. He later saw a science magazine that had a article in it
2. Always call the police to report an accident. Never, ever leave the scene of an accident until all information has been obtained and you are told it is okay to leave. Leaving the scene of an
All university students know the convenience and importance of the microwave. The microwave is particularly important for students living in the Towers, as this is their only kitchen appliance. Since microwaves are a staple for university students, they become dirty quickly. The best way to keep microwaves clean is to clean up spills immediately. If you can 't, however, do this, follow the steps below. Your microwave will be spotless again almost instantly.
When entering the laboratory do not work alone, do not touch, smell any chemical without prior advice of the instructor. Do not touch any a laboratory equipment without advice of the instructor.
It is mandatory that all the lab users need to work under the supervision of the instructor or any other qualified personnel. When conducting experiments, the users need to proceed with caution and report any spills, injuries and accidents to the teacher or the person in charge. The students should be careful when handling the lab chemicals and equipment to avoid accidents (Jay, 2010). When heating substances caution should be taken not to point the test tube to yourself or a colleague. All open flames that are in use within the lab should not be unattended and always turn off all the heating equipment and water taps when not in use. All the students should ensure that no experiment should be left while in progress at all
... Curie and Frederic Joliot-Curie discovered that radioactive elements can be created artificially by the bombardment of alpha particles on certain elements. They were rewarded the 1935 Nobel Peace Prize. In the 1940’s, The Manhattan Project began. Albert Einstein and Enrico Fermi warned the United States about Germany’s extensive research on atomic fission reaction. The United States developed the very first working nuclear fission reactor below the football field at the University of Chicago. The Manhattan Project was officially in the process.
Now that you know what my situation was like going into the experiment, I will tell you what I did and what occurred as a result.