nonverbal communication personal space

Propagation of EM Waves in Atmosphere - In an Earth environment, electromagnetic waves propagate in ways that depend not only on their own properties but also on those of the environment itself. Since the various methods of propagation depend largely on frequency therefore the complete electromagne..

These are diseases caused by the entry and development of living organisms such as virus, bacteria, protozoans, worms or fungi into the body. The organism causing the disease may be transmitted from one person to another by means of air, water, food, physical contact and insects (ve..

Communicable Diseases - Communicable diseases are caused by the entry and development of living organisms such as virus, bacteria, protozoans, worms or fungi into the body. The organism causing the disease may be transmitted from one person to another by means of air, ..

Communicable Diseases - These are diseases caused by the entry and development of living organisms such as virus, bacteria, protozoans, worms or fungi into the body. The organism causing the disease may be transmitted from one person to another by means of air, water, food, phys..

Communication Satellites - Communication satellites are normally geostationary satellites. They have devices called transponder which receive signals from an earth station and transmit them in different directions. The signals in the form of electromagnetic radiation are transmi..

AIDS - AIDS is a disease that can prove to be fatal. The immune system of the body is affected. Acquired Immuno Deficiency Syndrome which is the medical expansion for AIDS was first detected in June 1981 in USA. The disease is caused by a retrovirus - HIV (human immuno deficiency virus). Immune res..

: Addition of iodine to salt to prevent goitre). Prevention of breeding of harmful insects. Control of pollution through the Central and State Pollution Control Boards. Administration of vaccinations against communicable diseases like tuberculosis, diphtheria, whooping cough, tetanus, mea..

Under this category are diseases which do not spread from an infectious person to a healthy person..

Under this category are diseases which do not spread from an infectious person to a healthy person. These are non-infectious diseases e.g., diabetes, arthritis, heart disease and cancer. Many non-communicable diseases are caused by nutritional deficiency. In this chapt..

Typhoid - This is the most communicable disease in our country and effects mainly children in the age group 0-15 years. Every year 2.5 million people suffer from typhoid. Caused by bacterium salmonella typhi, it passes out through the excreta of the infected person. This is spre..