First man to go into space Yuri Gagarin, RussiaFirst woman to go into space Valentina Vladimirovna Tereshkova, RussiaFirst person to walk in space Lt.Col.Alexei Leonov,USSRFirst Space tourist Dennis Tito, USAFirst woman to walk in space Svetlana Savitskaya, RussiaFirst creature on space Laika, a dogFirst … [Read more...] about Firsts in Space

UnitQuantityAmpere Electric currentAngstrom Wave length of lightBar Atmospheric pressureBel Intensity of soundByte Information /DataCalorie Quantity of heatCandela Luminous IntensityCandle power Illuminating power of source of … [Read more...] about Important SI Units

Actinometer Measures the intensity of lightAltimeter Special type of aneroid barometer, used in measuring altitudesAmmeter Measure the strength of an electric currentAnemometer Measure the velocity and find the direction of the windAspirator An apparatus used for removing liquids from body … [Read more...] about Scientific Instruments

Human BloodHuman blood is a liquid connecting tissue. It delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.It is composed of blood cells suspended in blood plasma. Plasma constitutes 55% of blood fluid and contains dissipated proteins, glucose, mineral … [Read more...] about Blood

Vitamins are complex organic compounds and are important for vital functioning of an organism. Since, a very small amount of vitamin can be synthesized by human body on its own; therefore, their intake must be incorporate in one’s diet for proper functioning of the body.  There are 13 vitamins that are recognized at present. Vitamins are … [Read more...] about Vitamins

General:There are 206 bones in an adult human body. Bones of hands and feet constitute 50% of the total bones in the body. A new born baby has 300 bones. 96 of these fuses together with growth. The largest bone of the body is the FEMUR. It is the thigh bone. It constitutes of about 27.5% of a person’s stature. The average length of FEMUR … [Read more...] about Skeletal system