Science and Technology
Total Internal Reflection
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> , in physics, complete reflection of a ray of Light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle. In … Read more
Definition of speed,velocity, gravity, mass, weight, force, impact, work, power and energy
Speed An object is said to be in motion if it changes its position with time, with respect to its surroundings.Speed is defined as the distance moved per unit time, i.e Speed =Distance /Time When we say that an object is at rest or in motion,then this statement is incomplete and meaningless. Basically, rest & … Read more
Technology with a Human Face
Technology with a Human Face Technology and the Human Race The human race has indeed gone far with technology. From the age when he still used wooden and stone tools to a powerful era of silicon and steel, he ceased to be a helpless prey to a number of predators to become a god among … Read more
Developments and applications of science and technology
Professor Freeman J. Dyson, of Institute of Advanced Studies, Princeton, in his book “Infinite in all Directions,” had this to say about Technology: “Technology is a gift of God. After the gift of Life, it is perhaps the greatest of God’s gifts. It is the mother of civilization, of Arts and of Sciences. Technology continues to … Read more
Data handling and Interpretation (charts, graphs, tables, data sufficiency etc.)
We have Bifurcated the topic Data handling and Interpretation (charts, graphs, tables, data sufficiency etc.) into following topics for exhaustive study:- Data Analysis – Mathematical operation Basic numeracy (numbers and their relations, orders of magnitude etc.) Data Interpretation (charts, graphs, tables, data sufficiency etc.) and analysis of data. Data Collection Analysis- Interpretation- Collection, Interpretat ion and … Read more
Terminology related with Sound
Terminology related with Sound Amplitude Amplitude, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path. The amplitude of a pendulum is thus one-half the distance that the bob traverses in moving from one … Read more
Fundamental concepts in vaccination
Fundamental concepts in vaccination Immunology and Vaccine-Preventable Diseases Immunology is a complicated subject, and a detailed discussion of it is beyond the scope of this text. However, an understanding of the basic function of the immune system is useful in order to understand both how Vaccines work and the basis of recommendations for their use. … Read more
Food Preservatives
Food preservatives Food preservatives constitute a group of compounds of widely different molecular structures; they are organic and inorganic substances with different functional groups and tendencies to form ions. There are no procedures that are generally applicable to the analysis of preservatives as a class of food additive; the procedures are specific to … Read more