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TutorVista's online Calculus help isn't just about working out a few problems and logging off. Features like regular homework help, and exam prep enable a student to get all the help he/she needs. There is also an extensive library of e-learning material like free Calculus question banks..

Geometrical isomers are usually named using the naming convention cis and trans or syn and anti. In some cases, these names are inadequate. A new system of nomenclature has been introduced namely, the E and Z isomers. E stands of Entgegen (meaning "opposite" in German) and Z stands for Zu..

In 1895, Wilhelm Conrad Roentgen, a German physicist observed, while doing some experiments with the discharge tube, that when cathode rays are allowed to fall on a metal target called anticathode placed in their path, a new kind of rays are produced. These radiations are called X-rays. P..

X-Rays - In 1895, Wilhelm Conrad Roentgen, a German physicist observed, while doing some experiments with the discharge tube, that when cathode rays are allowed to fall on a metal target called anticathode placed in their path, a new kind of rays are produced. These radiations are called ..

Question: A boy has 3 library tickets and 8 books of his interest in the library. Of these 8, he does not want to borrow Chemistry Part II, unless Part I is also borrowed. In how many ways can he choose the three books to be borrowed? Answer: There are two ways of se..

It is a common series of steps for both aerobic and anaerobic respiration. It is a process by which glycogen or glucose or other sugars are converted into pyruvic acid. This process does not utilise oxygen. Glycolysis is also called as EMP path way or EMBEN, MEYERHOF and PARNAS pathway as the vari..

In the famous atomic theory of John Dalton (1805), it was suggested that the atoms of an element have a characteristic mass. So, attempts were made to classify elements on the basis of their atomic masses. In the year 1829, Johann Wolfgang Dobereiner, a German scientist, was the first to ..

Dobereiner's Triads - In the famous atomic theory of John Dalton (1805), it was suggested that the atoms of an element have a characteristic mass. So, attempts were made to classify elements on the basis of their atomic masse..

Nuclear Fusion - The sun is the most enormous and direct, source of energy. Where does this enormous energy that the sun radiates come from? The source of this energy was not known to mankind until the year 1939. It was a German physicist, Hans Bethe, who proposed that the sun contains hy..

, a German Biochemist, discovered the ABO blood grouping. ABO blood groups are determined by the gene I (for Isoagglutinin). There are 3 alleles, I A , I B and I o of this gene. Proteins produced by the I A and I B alleles are known as A and B antigens respectively. Individuals with ..