Vacuum tube

. Introduction Superconductivity is widely regarded as one of the greatest discoveries of the 20th century. A superconductor, is a metallic alloy or compound that will conduct electricity without resistance below a certain temperature. The major applications of superconductivity pertain to the medical, science and industrial field, and they all require high intensity magnetic fields. Therefore this report outlines superconducting magnets, its benefits of why they are good magnets, as well as an…

needed to extend or compress a spring by some distance is proportional to that distance) in 1660 and the discovery of plant cells using a compound microscope in 1663. The compound microscope uses two or more lenses, which are connected by a hollow tube. The top lens (called the eyepiece) is the one that people look through, and the bottom lens is called the objective lens. This means that the specimen is magnified twice as much as a simple microscope. Hooke developed his microscope with a new…

When the baby is born with asphyxiation problems and MSL, oxygen must be given either with a bag and mask ventilation or by intubation with an endotracheal tube. It is vital to remove any of the meconium visible in the upper airway and larynx before attempting the assisted ventilation.2 Hypoxic-ischaemic encephalopathy (HIE) is associated with birth asphyxia and is a reliable indicator of future handicap…

ABSOLUTE PRESSURE – measured from zero pressure or vacuum. RIGIDITY IN SPACE – characteristic of a gyroscope that prevents its axis of rotation tilting as the earth rotates. This is used by directional gyros and gyro horizons. HEADING INDICATOR – a gyroscopic instrument that gives the pilot an indication…

The origin of von Neumann Architecture and the EDVAC The first description of what is now known as von Neumann Architecture was presented in a paper titled “First Draft of a Report on the EDVAC” by John von Neumann. The idea originated after John von Neumann joined a group of scientists who had detected a problem in the ENIAC’s functionality and wanted to keep developing computer technology after ENIAC’s success. The motive behind this investigation is revealed in a letter between Herman…

What is abortion? It is the expulsion or “termination” of a human fetus, weather it be natural through a miscarriage or artificially induced, via chemicals or surgery. In 2005 about 1.21 million abortions occurred. That is approximately 3,315 abortions every day. Many people speculate that the fetus is not considered a person until it is born. Studies show that about 18 days after conception the fetus already has a heart beat, and at 8 weeks you can hear it. Some feminists and other people…

The following is summary of my life after graduation. Right after graduating in 1963 John Callahan (Geibel High School class of 63) and I enlisted in the US Air Force. On the August 20th 1963 we left Connellsville for Lackland Airforce Base in Antonio TX for basic training. He and I ended up spending some of the hottest months of the year in Texas. I can still remember getting off the airplane in San Antonio at 3 AM and being shocked at the heat and humidity (~85 degrees). After our twelve weeks…

The nurse or doctor caring for the patients could use the strips to treat the patient and track trends. Central supply decided to track equipment in the hospital. The tracked equipment included heart monitors, IV pumps, tube feeding pumps, bladder scanner, wound vacuums, pedal doppler, and wheelchairs. “In a busy inpatient setting, just locating the necessary equipment is a difficult task, especially when the facility is spread out or the equipment is hidden or located over several floors.”…

The Stock Market started having problems on October 24, 1929 which was known as black Thursday (Rosenburg). Stock prices fell and people started to sell a lot of their stocks, which made things worse. October 29, 1929 is known as Black Tuesday. It was the worst day in stock market history (Rosenburg). 16.4 million shares of stock were sold that day which was a new record (Rosenburg). After the crash many people had lost their life savings and many businesses were ruined, which also led to many…

little damage on humans than water, air and land pollution. But people who are affected by noise pollution know that it is small issue and needs attention [1]. Most Common noise (i) Household sources: Gadgets like kitchen food mixer, grinder, vacuum cleaner, washing machine and cooler, air conditioners, can be very injurious to health and noisy. Others include sound systems loud speakers and TVs and ear phones. Another example may be your neighbor’s dog barking at night [3]. (ii) Social…