The IUCN Red List of Threatened Species is a compendium of information on the species of plants, fungi and animals, which provides information on the taxonomy, conservation status, distribution, population, habitat and ecology, use and trade, threats, and conservation actions. The IUCN Red List of Threatened Species, also simply known as the IUCN…[Read more]

Stereoisomerism is a type of isomerism that is exhibited by the compounds having the same structure but different spatial arrangements, that is, different configurations. Such isomers are known as stereoisomers. Configuration is defined as the spatial arrangement of atoms and groups in a molecule. There are two types of stereoisomerism, viz. – opti…[Read more]

Geometrical isomerism, also known as cis-trans isomerism, is a type of stereoisomerism exhibited by the compounds having the same structure but different configurations. Geometrical or geometric isomerism is shown by a wide variety of molecules that can exist in different stable configurations; the reason for this ability being the presence of a…[Read more]

Dr. D.N. Ray of Calcutta (Kolkata), India introduced Blatta Orientalis as a homeopathic remedy for asthma. His findings and experiences with Blatta Orientalis were published in “The Homeopathic Recorder” in 1890 and 1891.

Who introduced Blatta Orientalis to Homeopathy?

An inertial frame of reference is defined as a frame of reference in which Newton’s first law of motion is valid.
Examples of inertial frames of reference are as follows –

The earth is approximately an inertial frame of reference. It is not completely an inertial frame of reference because of the acceleration associated with its rotation on…[Read more]

The ability of the eye with normal vision to see best a small part of the object it is looking at, while seeing everything else worse is known as the Central Fixation. In abnormal conditions of the eyes, this ability of central fixation is lost.

When the eye possesses the ability of central fixation, the eye has perfect sight and is perfectly…[Read more]