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What is Memory?  Scroll Down To Download!  Memory is the process of taking in information from the world around us, processing it, storing it and later recalling that information, sometimes many years later. Human memory is often likened to that of a computer memory system or a filing cabinet. But in fact, memory is far from perfect - most people do not remember every single thing that has happened to them, and memories are often changed and can become distorted. Memory is not just one entity - there are different types of memory such as: learning the meaning of single words, facts about the world, skills like learning to ride a bicycle or how to play a musical instrument, and a complex type of memory that allows us to recall and even 're-live' personal events or episodes from our past. This latter type of memory forms our personal history or autobiography, which is why it is known as autobiographical memory. We and other research teams have found that auto...

what is the Friction?  Scroll Down To Download!  Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move. Friction always slows a moving object down. The amount of friction depends on the materials from which the two surfaces are made. The rougher the surface, the more friction is produced. Friction also produces heat. If you rub your hands together quickly, you will feel them get warmer. Friction can be a useful force because it prevents our shoes slipping on the pavement when we walk and stops car tyres skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding. Sometimes we want to reduce friction. For example, we use oil ...

what is the Mass?  Scroll Down To Download!  HOMESCIENCEPHYSICSMATTER & ENERGY Mass PHYSICS WRITTEN BY: The Editors of Encyclopaedia Britannica See Article History Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force. The greater the mass of a body, the smaller the change produced by an applied force. By international agreement the standard unit of mass, with which the masses of all other objects are compared, is a platinum-iridium cylinder of one kilogram. This unit is commonly called the International Prototype Kilogram and is kept at the International Bureau of Weights and Measures in Sèvres, France. In countries that continue to favour the English system of measurement over the International System of Units (SI), the unit of mass is the slug, a mass whose weight at sea level is 32.17 pou...

4G vs Cable Scroll Down To Download! 4G LTE vs. Cable Verizon 4G LTE wireless broadband is 10 times faster than 3G — able to handle download speeds between 5 and 12 Mbps (Megabits per second) and upload speeds between 2 and 5 Mbps, with peak download speeds approaching 50 Mbps. Cable speeds vary, but 4 to 12 Mbps are common. Why are megabits per second important? The bit rate plays an important part in the quality of movies and videos. As download rates approach 5 Mbps, you will experience fewer pauses while your HD video streams. If you and your neighbors have cable, you’re all sharing the same lines. During peak Internet times, your speeds may slow down. The same slowdown may occur when you upload (transfer) or download large files, stream music and more. Is 4g faster than cable Internet? Both 3G and 4G wireless use cell phone towers and cell phone signals to provide yourinternet connection. All 3G download speedsare significantly slower than wired cable and DSL. ... 4G...

Battery Information? Scroll Down To Download! Why are carbon rods used in batteries? A zinc–carbon battery is a dry cell primarybattery that delivers about 1.5 volts of direct current from the electrochemical reaction between zinc and manganese dioxide. Acarbon rod collects the current from the manganese dioxide electrode, giving the name to the cell. Is there carbon in batteries? Clearly, carbon is an important material forbatteries and fuel cells. ... Low- temperature fuel cells and batteries are other electrochemical applications where carbonaceous materials are important components. In these applications, alternatives to carbon in the electrodes are not readily apparent. Why are zinc carbon batteries good? Zinc Carbon. They have a relatively high internal resistance and this makes them more suitable for low current drain devices such as radios, toys and low power torches. They don't perform well at low temperatures and high temperatures can dry out the elec...

What is Software? Scroll Down To Download! Computer software, or simply software, is a collection of data or computer instructions that tell the computer how to work. This is in contrast to physical hardware, from which the system is built and actually performs the work. In computer science and software engineering, computer software is all information processed by computer systems, programs and data. Computer software includes computer programs, libraries and related non-executable data, such as online documentation or digital media. Computer hardware and software require each other and neither can be realistically used on its own. At the lowest programming level,[clarification needed] executable codeconsists of machine language instructions supported by an individual processor typically a central processing unit (CPU) or a graphics processing unit (GPU). A machine language consists of groups of binary valuessignifying processor instructions that change the state of the comput...

What Is IC? Scroll Down To Download! An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material that is normally silicon. The integration of large numbers of tiny MOS transistors into a small chip results in circuits that are orders of magnitude smaller, faster, and less expensive than those constructed of discrete electronic components. The IC's mass productioncapability, reliability, and building-block approach to integrated circuit design has ensured the rapid adoption of standardized ICs in place of designs using discrete transistors. ICs are now used in virtually all electronic equipment and have revolutionized the world of electronics. Computers, mobile phones, and other digital home appliances are now inextricable parts of the structure of modern societies, made possible by the small size and low cost of ICs. Integrat...

What Is Thermoelectric Cooling? Scroll Down To Get Link! Thermoelectric cooling uses the Peltier effectto create a heat flux at the junction of two different types of materials. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current. Such an instrument is also called a Peltier device, Peltier heat pump, solid state refrigerator, or thermoelectric cooler (TEC). It can be used either for heating or for cooling, although in practice the main application is cooling. It can also be used as a temperature controller that either heats or cools. This technology is far less commonly applied to refrigeration than vapor-compression refrigeration is. The primary advantages of a Peltier cooler compared to a vapor-compression refrigerator are its lack of moving parts or circulating liquid, very long life, invulnerabil...

What Is Nuclear Fission Scroll Down To Download nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei. The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay. Nuclear fission of heavy elements was discovered on December 17, 1938 by German Otto Hahn and his assistant Fritz Strassmann, and explained theoretically in January 1939 by Lise Meitner and her nephew Otto Robert Frisch. Frisch named the process by analogy with biological fission of living cells. For heavy nuclides, it is an exothermic reaction which can release large amounts of energy both as electromagnetic radiation and as kinetic energy of the fragments (heating the bulk material where fission takes place). In order for fission to produce energy, the total binding energy of the resulting element...

Mendelevium Information Scroll Down To Download Mendelevium Element Mendelevium is a synthetic element with the symbol Md (formerly Mv) and atomic number 101. A metallic radioactive transuranic element in the actinide series, it is the first element by atomic number that currently cannot be produced in macroscopic quantities through neutron bombardment of lighter elements. It is the third-to-last actinide and the ninth transuranic element. It can only be produced in particle accelerators by bombarding lighter elements with charged particles. A total of sixteen mendelevium isotopes are known, the most stable being 258Md with a half-life of 51 days; nevertheless, the shorter-lived 256Md (half-life 1.17 hours) is most commonly used in chemistry because it can be produced on a larger scale. Mendelevium was discovered by bombarding einsteinium with alpha particles in 1955, the same method still used to produce it today. It was named after Dmitri Mendeleev, father of the pe...

Berkelium  Information Scroll Down To Download Berkelium  Element Berkelium is a transuranic radioactive chemical element with the symbol Bk and atomic number 97. It is a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the Lawrence Berkeley National Laboratory (then the University of California Radiation Laboratory) where it was discovered in December 1949. Berkelium was the fifth transuranium element discovered after neptunium, plutonium, curium and americium. The major isotope of berkelium, 249Bk, is synthesized in minute quantities in dedicated high-flux nuclear reactors, mainly at the Oak Ridge National Laboratory in Tennessee, USA, and at the Research Institute of Atomic Reactors in Dimitrovgrad, Russia. The production of the second-most important isotope 247Bk involves the irradiation of the rare isotope 244Cm with high-energy alpha particles. Just over one gram of berkeliu...

Fermium Information Scroll Down To Download Fermium Element Fermium is a synthetic element with the symbol Fm and atomic number 100. It is an actinide and the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities, although pure fermium metal has not yet been prepared.[3] A total of 19 isotopes are known, with 257Fm being the longest-lived with a half-life of 100.5 days. It was discovered in the debris of the first hydrogen bomb explosion in 1952, and named after Enrico Fermi, one of the pioneers of nuclear physics. Its chemistry is typical for the late actinides, with a preponderance of the +3 oxidation state but also an accessible +2 oxidation state. Owing to the small amounts of produced fermium and all of its isotopes having relatively short half-lives, there are currently no uses for it outside basic scientific research Atomic Number: 100 Atomic Symbol: Fm Atomic ...