UQ Physics New Soccer Cleat For Sale Club

UQ Physics Club

NASA originally planned to make 2 main mirrors for the Hubble Space Telescope, but ultimately ordered a total of 3 from different manufacturers. The manufacturers were supposed to double check each others mirrors but this wasn't done. The mirror installed in HST and launched into space, at which point it could no longer be replaced or easily repaired, was defective. The first spare, which was defect free, was later used in a ground based telescope in New Mexico. The other spare, also defect free, is on display in the Smithsonian Institution.

In the early days of the internal combustion engine, advances in metallurgy and engineering meant that fuel quality was the major limiting factor in engine power. This was solved with the invention of the fuel additive lead tetraethyl, which increased octane rating and allowed the development of very high power engines such as those used in WW2. Use of leaded fuel, now banned in most of the world except for aviation use, is estimated to have polluted the atmosphere with 7,000,000 tonnes of lead.

Chlorofluorocarbons, CFCs, are remarkably useful solvents and refrigerants but created the hole in the ozone layer, a threat to life on earth. Perhaps he was, because he ultimately he won a Nobel Peace prize, which some in the USA considered a "weird insult from Norway". solvent. Happy is :) unhappy is :( and so on. Modern email software uses small graphics bitmaps to display these. Start with happy face, unhappy face and various other facial expressions. Move on to soccer ball (Buckminsterfullerene?), watermelon and some farm animals. Then comes beer, can of drink and slice of pizza only $1.00 each at an error bar, and coffee. Then go intellectual with yin/yang, ghost, alien, clown, an important reminder to keep taking the medication, computer and game console. There are many more, including the emoticon for. terrorist. If you run Linux try this path. /usr/share/pixmaps/pidgin/emotes/default

There exists a device which is completely stupid, completely useless, yet so fiendishly clever that it deserves our respect and attention. It is the 'ball bearing motor'. Two ball bearing assemblies are mounted on a shaft. The outer races are insulated from each other and connected to a low voltage high current power supply. Current flows through the balls. Local current density at the point contact between the balls and the races is extremely high causing heating and expansion. The balls become distorted, elongated, causing mechanical forces to rotate the shaft. These motors can draw over 100 amps and rotate at several thousand RPM. The balls commonly glow red hot and usually emit showers of sparks. What genius invented this? There is no known use for the ball bearing motor. other than to make physics phun. The result was a polymer film with a distinct metallic lustre, polyacetylene. The supervisor, Hideki Shirakawa, and two of his colleagues subsequently won a Nobel prize in Chemistry for further developments of conductive polymers Nike Hypervenom Phantom Shoes For Sale. The best conductive polymers have resistivity similar to the best metallic conductor, Silver. Conductive polymers have led to organic semiconductors and LEDs and flexible dot matrix displays capable of displaying TV images. "OLED" TV sets are on sale now. Today almost all countries have standardised on Alternating Current at a frequency of either 50 Hz or 60 Hz. Japan is very clever and has both, 50 Hz in the North and 60 Hz in the South. 300 is the lowest common multiple of 50 and 60, making it very easy to calculate the free space wavelength of standard power distribution frequencies. The defining characteristic of bottled water isn't that it came from a melted glacier or a pristine spring, but rather that it is in a bottle. It might have come from a tap, and in fact in this case it did. The first problem was that at the time of product launch a British comedy TV show had a plot line about bottling tap water and selling it at a huge profit. The second problem was that additives and manufacturing processes created carcinogens in the water at above permitted levels. The manufacturer purchased water that was safe to drink from a tap in Sidcup at something like 1p per 10 l, removed harmless impurities, added other chemicals including carcinogens, and sold it for up to 95p for a 500 ml bottle. Guardian BBC

Andrew Geim did some of his studies at the renowned Moscow Institute for Physics and Technology, won an Ignobel prize for levitating a frog and a real Nobel as codiscoverer of graphene. Andre also has "Ads by yoo knoow whoo" on his personal website. Mixed up amongst ads for UTS, UniSA, UWS, USQ, CDU, MQ and UQ is an ad for "Universal Degrees". Avoid inconvenient and time consuming lectures and exams, just buy a degree. Universal Degrees accepts VISA, Mastercard, AMEX, Diners and various other payment methods and offers scholarships (discounts) to exceptional students (customers). In case you can't find the ad, we have a screenshot here, then "back" on your browser Adidas Nitrocharge Shoes. There is a small positive differential between the inside of the cabin and outside, to maintain sufficient air to sustain life at altitude. The aircraft are also intentionally pressurised and tested at ground level as part of normal maintenance. You know what happens if you over inflate a balloon Discount F50 Soccer Sale Online. It goes ***POP***. What do you think happens if a KC-135, the military variant of a Boeing 707, is accidently overinflated in a pressurisation test? Please don't let this happen to your Boeing.

What are the rarest elements on Earth? Pa, Protactinium (pictured) is amongst the 10 rarest. It exists as a few PPT in Earths crust, and forms no more than a few PPM of Uranium ores. In 1961 the British government extracted 125g of artificially created Pa from used nuclear reactor fuel, which represents the world's major stockpile of the element. The rarest elements on Earth are Fr, Francium and At, Astatine. Each is believed to exist naturally in a quantity of about 30g in the entire planet. Fr is commonly made in the lab in quantities of up to about 300,000 atoms, and can be studied for a few minutes only until it undergoes radioactive decay. Fr is an alkali metal. At is a halogen. If it was actually possible to get both, they would react chemically. Francium Astatide anyone? Abundances Pa UK Fr At

Ever heard of "Benford's Law"? Real world numbers over vastly different regimes follow a common pattern. Numbers staring the with digit "1" are most common, followed by "2", then in decreasing frequency through to "9" New Soccer Cleat For Sale. This applies to resistor values, baseball statistics and geographical data amongst other things. There are specific exceptions, such as winning lottery numbers or numbers that are constrained in some way. Benford's Law is sufficiently trustworth that it can be used to detect fraudulent financial transactions. Benford's Law

Before the Large Hadron Collider was the Synchrophasotron. What a great name! Built in 1957 in Dubna, it was for a time the most powerful particle accelerator in the world and was the pride of the old Soviet Union. It ran until 2002 when it was decommissioned to make way for a new accelerator. It's main magnet weighed 36,000 tonnes, a Guinness world record. While not a famous part of Communist history, there are other records for magnets. The strongest magnetic field ever produced is 91.4 T, pulsed, achieved by Helmholtz Society in Germany. The world's largest magnet sculpture uses over 500,000 magnets and weighs around 270 kg. Louise J Greenfarb of Henderson Nevada is credited with having the world's largest collection of refrigerator magnets, at over 30,000. I wonder if anyone ever stuck a fridge magnet on the side of the Synchrophasotron? Synchrophasotron (Gorgeous!)

Strongest. Magnet sculpture. Refrigerator magnets.

What is the longest running physics demonstration at any university anywhere in the world? If you though it might be, oh, viscous black liquid in the St Lucia region of Australia you would be. WRONG! Let's try across the dutch, Unzud, at the University of Otago. There the "Beverly Clock" has been running almost continuously, without winding, since it's construction in 1864. It is powered by variations in temperature which cause air in a sealed box to expand and contract, pushing on a diaphram, raising and lowering a weight to wind the mechanism. Is this the oldest? No. Try the "Oxford Electric Bell". It consists of a floating clapper, and two bells which are connected to high voltage batteries. The clapper is attracted to one bell and repelled from the other, until it contacts one bell and is charged to the opposite polarity, at which point direction of the electrostatic forces is reversed. The Oxford Electric Bell has been "ding- ding- ing" at about 2 Hz since 1840.