Geek-of-All

The biggest difference between a sprocket and a gear is how each works on a functional level. Both tend to be grooved wheels used in machinery, and their basic appearance is often really similar — but how they operate and what, exactly, it is they do tends to be really different. In general, a gear is a toothed wheel designed to mesh with other gears and transmit movement to them , which in turn can cause movement elsewhere. A sprocket, conversely, is a toothed wheel designed to engage and directly move a flexible indented or perforated item, like a chain or belt. The applications of each are different as a result. Sprockets are most common when there’s a moving belt or chain that is contained, as is commonly the case in bicycles, conveyor belts, and film projection reels. Gears are typically preferable in all other scenarios, cars and heavy machinery included. Not only are gears more universally useful, but they also aren’t as likely to need repairs or re-fittings...

Gasoline(Petrol), diesel fuel and fuel oil are all petroleum products. Petroleum is a mixture found in the earth, composed of crude oil and natural gas. While the products that are derived from petroleum power the modern world, raw petroleum is of little use until it is refined. It is the refining process that converts crude oil into gasoline, fuel oil, and diesel fuel. Crude oil is a complex mixture of hydrocarbons that are chained together in different lengths. These chains have different characteristics and properties and form the basis for the individual products created out of raw petroleum. To be able to convert these hydrocarbon chains into gasoline, diesel fuel, fuel oil and other petroleum products, they have to be separated from other chains. Crude oil is separated into these different chains through distillation. During distillation, crude oil is heated in a distillation column. Collection trays are placed at differing heights in the col...

 What if I told you there is more to matter or rather atoms than just electrons, protons and neutrons?? There are two main categories of subatomic particles - Fermions and Bosons. Fermions are the particles we think of as "stuff" - leptons like the electron, neutrino, and cousins, and quarks like the up quark and others in its sizable family. Gauge bosons are the particles that mediate the four fundamental forces of nature - the weak and strong nuclear forces, electromagnetism, and gravity. These include the familiar photon, and its far less-frequently-seen cousins, the W and Z bosons, gluons, and (physicists expect) the graviton, the much-sought-after particle thought to mediate gravitational interactions. It is important to understand the difference between subatomic particles and fundamental particles. Fundamental means that the particle has no smaller constituents; it is fundamental. Not all subatomic particles are fundamental, though all known...

A stock market is a place where investors(we people) trade certificates that indicate partial ownership in businesses for a set price. Through these transactions, companies can raise the initial capital necessary for various aspects of operation, and those who buy the certificates become entitled to a portion of the business' assets and earnings. Although the value of the certificates is not static and depends to a large extent on public perception, the stock market remains one of the major means of investment and can be used as an indicator of overall economic health. Stocks and Shares When companies need money for various goals, one option they have for getting capital (money) is to divide ownership of their businesses up into parts known as SHARES . They sell these shares and use the funds for tasks like developing products or buying buildings and equipment. To provide some proof of this ownership division, they print certificates called STOCK , and in...

Getting a standard blood transfusion cannot and will not change your DNA. Most people only receive red cells or blood plasma during medical procedures, and neither one of those blood components contain any DNA material. Transfused blood still needs to be a match to the recipient's blood type, including the ABO blood groupings. A blood test performed after a standard blood transfusion would reveal only the patient's DNA profile. This isn't to say that human blood does not contain any DNA, however. White blood cells, which are usually removed from donated blood by a centrifuge, do contain DNA. If someone were to require a whole blood transfusion, the donor's white cells would enter the recipient's bloodstream and remain there until they expire, generally within four to eight days. Such whole blood transfers are rare, however, and the donor's DNA would not survive long enough to have an effect on the recipient's DNA. Conceivably, a bloo...