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.
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...
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."
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.
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).
For as long as I can remember, I have been curious about almost everything. This curiosity of mine has led me to unravel the mystery of how things work and how they are formed. According to BSM Consulting, author of High-Level Description of the Sixteen Personality Types “The Mechanic,” “ISTPs have a compelling drive to understand the way things work and they like to take things apart and see the way they work” (BMS, “The Mechanic” par.2). One day, when I was about fourteen, I was microwaving popcorn. While waiting for the kernels to pop, I began to wonder about the components required to build a microwave oven and how those components work. I found a screwdriver and systematically began to take apart the microwave. Inside, along with numerous tubes and wires, was the heart of the oven: the magnetron. The ...
If you need to inhabit it, don't use anything that does not come from within it.
Educators need to be prepared for any accidents that may occur, make sure there is a first aid kit that is well stocked and checked on a regular basis. Food must be handled properly and a well balanced diet should be followed. Food safety guidelines need to followed to preven...
MTC ONLINE, " Reports of Current Experimentation with Microwave and EM Weapons," <http://www.heart7.net/mcf/1.html> (10 August 2003)
In these commentaries, Schwarcz also answers questions that people and the media have and offer advice to people. For example, a listener asked “How long one should allow microwaved food to stand after cooking to ‘allow the microwaves to escape?” He responded by describing how the food on the inside is cooked through the heat transfer from the exterior, which allows the food to finish cooking. Additionally, it is essential to leave the food to stand for a few minutes. However, this does not allow the microwaves heat to leave, but for the interior to finish cooking as well as the exterior. If you don’t leave the food to settle there for a few minutes than it will leave the cooking process incomplete.
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
... 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.
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
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.
Michael Faraday is a British physicist and chemist, best known for his discoveries of electromagnetic induction and of the laws of electrolysis. He was born in 1791 to a poor family in London, Michael Faraday was extremely curious, questioning everything. He felt an urgent need to know more. At age 13, he became an errand boy for a bookbinding shop in London. He read every book that he bound, and decided that one day he would write a book of his own. He became interested in the concept of energy, specifically force. Because of his early reading and experiments with the idea of force, he was able to make important discoveries in electricity later in life. He eventually became a chemist and physicist.