Physics In Human Life

Physics In Human Life

There are many positions of physics in various fields of human life technology, such as medical, agriculture, telecommunications, and transportation. The contribution of physics in these fields has been widely used by humans to help their lives. Its location as a lower science makes physics as one of the branches of science that is very widely applied in everyday life.

Physics in Medical

1. Use of X-Rays for Patient Diagnosis

X-ray or X-light is one of the discoveries of physicists who are applied in the medical field. Thanks to this equipment, doctors can identify the patient’s tissue structure without trying surgery. X-rays use electromagnetic radiation to show images of the inside of the body. This equipment traces the name of its inventor to a German physicist named Wilhelm Conrad Röntgen.

2. Tensimeter to measure blood pressure

One more position of physics in the medical field we can observe in sphygmomanometer equipment. This equipment serves to measure the patient’s blood pressure. The physical concept that underlies the sphygmomanometer is Pascal’s law.

3. Sterilization of Medical Equipment

Medical devices are very susceptible to viruses or germs after use. Therefore, sterilization action is needed for all these equipment before being used again. One method that can be used is electromagnetic waves.

Physics In Agriculture

1. Watering with gravity system

Agriculture needs water to support all types of plants on land. One of the procedures that are often used is irrigation with a gravity system. This method is very energy efficient because it only uses energy from gravity. Water is flowed from a large place to a low place by the push of gravity.

2. Eradication of Agricultural Pests

One of the problems often experienced by farmers is pests. If not eradicated, then pests will disturb the growth of plants, especially some of them can kill plants. As a result, the creation of agriculture has decreased. One way that can be used to eradicate pests is to use light. The light from the lamp will attract pests, then it dies because it is attacked by an electric current from the screen.

Physics In Telecommunications

1. Use of Optical Fiber on the Internet Network

Optical fiber is an example of a technology that works based on the principles of physics. This technology works based on the principle of light, which is transmitted through a material called optical fiber. Light is used as a data carrier so that it can be very fast, as early as the speed of light. Rows of physicists who functioned in laying the foundations of optical fiber, among others: Albert Einstein, Arthur Schawlow, Theodore Maiman, and Herbert Kroemer.

Currently, fiber optics are widely used in internet networks taking over copper cables. When using copper cable internet speed is only a few Mbps, with fiber optic internet speed increased thousands of times, can reach 100 Gbps.

2. Use of Electromagnetic Waves on Radio, Television, and Mobile Phones

One more physical discovery that works in the field of telecommunications, is electromagnetic waves. The physicist who contributed to this field is James Clerk Maxwell as the person who first created electromagnetic waves in 1873. Next, these waves were used by Guglielmo Marconi to send sound in 1899.

The use of electromagnetic waves continues to grow, not only for transmitting sound but also used for sending photos. This is what John Logie Baird tried as the person who first sent photos from London to Glasgow in 1927, as well as listing himself as the inventor of television.

Not only radio and television, communication technology that also uses electromagnetic waves is cellphones. This wireless communication equipment uses electromagnetic waves as a 2-way data carrier medium. Thanks to cellphones, we can communicate remotely.

Physics In Transportation

1. Aircraft Aerodynamic Wings

There are many applications of physics in the aircraft industry, one of which is in the process of making aircraft wings. Airplanes can take off and float in the air because position means wings. With certain modifications using the principles of physics, the wings can create lift so that they can hold the plane in the air. The principle of physics that underlies the working method of airplanes is Bernoulli’s Law.

2. Magnetic levitation train

Another type of transportation that uses the principles of physics is the magnetic levitation train. As the name implies, this train uses magnets as a lifting and propelling force for the train. By using magnetic repulsion, the train will float without holding the rail, so the frictional force can be reduced. That way, this train can go very fast up to 600 kilometers / hour.