discovery x-rays

>This is called as dual nature of mater. The radiation has a dual aspect behaving either as waves or as particles (waves when it interferes, diffracts and particles in a photocell). Einstein showed that a particle having a finite mass has been supposed to be associated with a definite amount of ene..

Summary - Atoms are made up of three fundamental particles: electrons, protons and neutrons. Discharge tube experiments by William Crookes and J.J. Thomson led to the discovery of electron. Goldstein's experiment with the discharge tube having a perforated cathode led to the discover..

Angiography involves injecting a dye directly into the blood and then taking X-rays of the arteries. Angiography of the blood vessels of the heart is called Coronary angiography. X-rays when coupled with image intensifiers gives a more real image. During surgery, these images ca..

In conventional X-rays an overlap of organs occurs and often difficult to interpret. These diagnostic difficulties have been eliminated by the use of an X-ray technique called computer Tomography (CT) scaning or computerised Axial Tomography (CAT) Scanning. CT Scan is a radiolog..

Ionic radii can be obtained from the dimensions of the unit cell which are obtained from x-ray studies. It has been noticed that the interionic distances obtained from the calculated value are in good agreement with the observed values (X-ray studie..

Computed Tomography - In conventional X-rays an overlap of organs occurs and often difficult to interpret. These diagnostic difficulties have been eliminated by the use of an X-ray technique called computer Tomography (CT) scaning or computerised Axial Tomography (CAT) Scanning...

. 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 Rutherford were the..

The different types of electromagnetic radiations in the increasing order of wavelengths are, gamma rays ( g ), X-rays, ultra-violet rays (U.V.), visible radiation, infrared radiation (IR), microwaves and radio wave..

The complex process by which the information in RNA is decoded into a polypeptide is one of the exciting discoveries the genetic code. With only four biochemical letters (A, G, C, U) a one letter code could not unambiguously encode 20 amino acids. A two letter code could encode only 16 am..

Since all gases form cathode rays, it means that all atoms contain electrons. As the cathode ray particles were negatively charged, an electron was also carried a negative charge. The following processes were also found to emit electrons: a) The action of heat on certain metals...