Luminescence is an emission phenomenon of light that does not result from high temperature. It can be said that it is a cold body radiation process. Luminescence is a light emission that represents an excess of thermal radiation and lasts for a time exceeding the period of an electromagnetic oscillation. Read more…
Nuclear Magnetic Resonance(NMR) spectroscopy is an analytical technique that is a result of the interaction between the radiofrequency waves and the nucleus of a molecule.
Infra-red(IR) spectroscopy or Infra-red Absorption Spectroscopy is an analytical technique that applies infrared radiations for the chemical identification of a compound.
UV-Visible spectroscopy is an analytical technique that identifies a component that shows absorption or reflectance of ultraviolet(UV) and visible electromagnetic radiations under the range from 200-800 nanometers (UV range 200-400nm and Visible range 400-800nm).
AES is an analytical technique that uses the emitted radiations for the determination of metallic compounds in a given sample.
When x-rays are incident on a crystalline substance, the electrons of atoms of the substance become small oscillators and emit electromagnetic radiations in all directions at the same frequency as that of incident x-rays. This is called x-ray diffraction.
Mass spectrometry is a quantitative analytical technique used to determine the components present in a compound with their structure and chemical properties.
Soil is one of the potential trace evidence, found at almost every crime scene. Since it is present all over the landmass, therefore it is prevalent in every crime scene, either in small amounts or bulk quantities.
Atomic Absorption Spectroscopy(AAS) is a quantitative analytical elemental technique that provides the total metal content of the sample and is almost independent of the molecular form of metal in the liquid sample. It analyzes the concentration of elements in a liquid sample based on energy absorbed from certain wavelengths of Read more…
The invention of the microscope has been a boon in the scientific field which allowed scientists to visualize things or matter or objects which are not visible to the naked eye. The first microscope came into existence with the invention of the early microscope, by a Dutch spectacle maker Zacharias Read more…
Scanning Electron Microscope (SEM) is a type of electron microscope that produces a three-dimensional image of a microscopic object. As the name suggests a microscope forms images by scanning the surface of the object with the help of a focused beam of electrons. SEM was first developed in 1937 with Read more…
There are a lot of things, both living and non-living, on this earth and not everything is visible to the naked eye. Therefore, an instrument called a ‘microscope’ was developed to enter the world of those tiny things. The word ‘microscope’ is derived from the Greek words ‘mikros’ which means Read more…
The soil evidence present on the tyres of the culprit’s vehicle helped in his proving his conviction.
Soil is a biogeochemical material found on the outermost layer of the earth’s crust. It is composed of various layers where the distribution of constituents is not uniform. The heterogeneous nature of the soil is due to the variation in weathering, climatic and anthropogenic factors which vary with respect to Read more…
Death or severe injury caused by electric shock passing through the body is known as Electrocution. Electric burns are a kind of thermal injury. The tissue damage associated with an electric injury occurs when electric energy is converted to thermal energy or heat. Accidental death due to electric currents was Read more…
