Tnpsc and Upsc Notes Pdf
Stem Cell Therapy Stem Cell Therapy is also called Regenerative medicine. Stem Cell Therapy encourages the repair response of injured tissues, diseased tissue or dysfunctional tissue using stem cells. The success rate of Stem Cell Therapy The stem cell treatment has gained popularity significantly due to its effectiveness and high success rate up to 70 … Read more
Digestion Here is a table summarizing the organs of the human digestive system and their respective functions: Organ Function Mouth Chewing breaks down food into smaller pieces. Saliva contains enzymes (amylase) that begin the digestion of starches. Esophagus Transports food from the mouth to the stomach through peristalsis (muscular contractions). Stomach Secretes gastric juices (hydrochloric … Read more
Nutrition and dietetics Nutrition and dietetics is the science of food and how it affects human health. It is a wide field that includes the study of nutrients, food, and the body’s metabolism. Nutrition and dietetics include the following: In addition, for Tnpsc it is good to have an understanding of the following: Basics of … Read more
What is motion and its types? Motion definition physics In Physics, the objects which change their position are said to be motion. Similarly, an object which does not change its position is said to be rest. Even stationary object moves along with the speed of the earth. Any object under the influence of force is … Read more
Introduction to Communication System The early communication systems were developed by J.C. Bose, G. Marconi, and Alexander Graham Bell, etc. The communication industry is one of the oldest, it is since telegraph(1844), telephone(1876) and Radio (1887). The current communication technology is Global positioning System (GPS), satellite, mobile and optical communications. The Elements of An Electronic … Read more
All gadgets such as mobile phones, Tv, calculator, etc are Electronics, which has been part of our daily life. Semiconductor basics Pdf Evolution of Electronics The story of electronics started with the invention of vacuum diodes by J.A. Fleming. It was succeeded by a vacuum triode executed by Lee De Forest to Amplify electrical signals. … Read more
Introduction to Current Electricity The motion of charges is called Electric Current. The current electricity is the study of the flow of electric charges. Alessandro Volta (1745 – 1827) invented the electric battery that generated the first steady flow of electric current. Electric Current The matter is made of atoms. Each atom consists of a … Read more
Natural Magnets Artificial Magnets These are found naturally and they are irregular in shape. These are made by man which is a definite shape based on the usage. The strength of the magnet is natural and it is difficult to change. Artificial Magnet is made with specific strength as required. Natural Magnets are long-lasting, i.e … Read more
Heat and Temperature physics: Introduction This article is written for the Tnpsc exam for the topic ‘Heat’, in General studies. Science part (Physics). This note is for quick revision purpose only, kindly refer to Samacheer Kalvi Book. The measurement of warmness(hotness) or coldness of a substance or object is called its temperature. Temperature is also … Read more
Elements and Compounds in Chemistry Types of Pure Substances For a normal person, a pure substance means it is free from adulteration. Even Milk, Air, Water, etc. are not pure. In some cases, there are pure substances or single substances such as distilled water, sugar, baking soda, etc. Also Copper used for making electric wire … Read more