investigation and experimentation

As the theory of chemical evolution started gaining more support, investigations were initiated by several scientists to establish the conditions under which, the simplest organic compounds were formed in the primitive earth. Two scientists, Stanley Miller and Harold Urey were the f..

As the theory of chemical evolution started gaining more support, investigations were initiated by several scientists to establish the conditions under which, the simplest organic compounds were formed in the primitive earth. Two scientists, Stanley Miller and Harold Urey were the first t..

The fact that chemical changes produce electrical effect was discovered accidentally in 1971, by Luigi Galvani, an Italian professor. He found that an electric current flowed across two dissimilar metals. Volta, professor of natural philosophy successfully reproduced some of Galvani's results using..

Investigating the Need for Carbon Dioxide in Photosynthesis Take a potted plant. Destarch it. Insert one of its leaves in a bottle containing potassium hydroxide (KOH) solution as shown in the figure. KOH absorbs all carbon dioxide in the bottle. Leave the set up in sunlight for 48 ho..

. It must be noted here that scientific theories and laws are always provisional. Since scientific investigation is a human mental activity, to obviate human errors, it is necessary to confirm or reject the experimental results based on repeated investigations (if nece..

Sabine's Formula - Prof. Wallace C. Sabine (1868 - 1919) of Harvard University investigated architectural acoustics scientifically, particularly with reference to reverberation time. He deduced experimentally, that the reverberation time is: directly proportional to the volume o..

. In it, he pictured a sphere of positive charges mixed together with an equal number of electrons. For his theoretical and experimental investigations into the electron and the conduction of electricity by gases he was awarded the 1906 Noble prize in Physics. He and his student..

X-Ray Study of Crystals - In a crystalline solid, the constituent particles (atoms, ions or molecules) are arranged in a regular order. An interaction of a particular crystalline solid with X-rays helps in investigating its actual structure. Crystals are found to act as diffraction gratin..