Many people who think that Physics is just an ordinary science that only learn the natural sciences without any application. Especially still many people who think that Physics only learn the formula. And not a few who do not realize that many events even things that are very close to us involve the science of physics. Even Physics is a basic science that is needed by the branches of other sciences. Why is Physics so important in our lives? Certainly because many events in our life that involve the science of physics we both realize and tan.pa we realize. The more we understand Physics we will know that Physics has a wide range. Here is an example of the application of science Physics in everyday life.
REGULAR STRAIGHT MOTION APP
Regular Straight Motion (GLB) is a motion that has a constant speed. Although GLB is difficult to find in everyday life, because usually the velocity of the object is always changing. For example, when you ride a motorcycle or car, the rate of the car must always change. When there is a vehicle in front, the speed of the vehicle will soon be reduced. This is so we do not collision with other riders, especially if the conditions of a busy road. Another if the road conditions are bend and damaged.
The first example :
vehicles passing through toll roads. Although there is a turn on the highway, a wheeled vehicle can do the GLB on this highway if the toll road is straight. Vehicles moving on toll roads also sometimes have a steady pace.
Second example :
the movement of a train or an electric train on a rail. The railroad tracks are sometimes straight, though only a few kilometers away. The railway carries out the GLB as it moves over the straight track with a fixed rate.
Third example :
ships crossing oceans or oceans. When passing through the open sea, ships usually move on a straight path with fixed speed. When it comes to arriving at the destination port, usually the new ship changes course and reduces its speed.
Fourth example :
movement of aircraft. Aircraft also used to do GLB. After takeoff, the aircraft usually moves on a straight track with a fixed rate. Nevertheless, the aircraft also changed the direction of its motion when it was about to arrive at the destination airport.
Röntgen's experiments on his wife's hand, became an inspiration for the production of a device that can assist doctors in diagnosing patients, knowing the human body's image. The image or image produced from X-rays is to create a 2-dimensional image of the body organs that is imaged by using the concept of the attenuation of the radiation beam when interacting with the material. The desired image or object image is then recorded in a medium later known as a movie. From the Drawings produced in this film medical information can be extracted according to the clinical needs to be analyzed.
After decades of X-rays dominate the world of medicine, there is a weakness of our 3-dimensional body organ objects mapped in 2-dimensional images. So that there will be mutual overlapping of the mapped stack, clinically the information recorded in the film can be distorted. This is the next challenge for physicists to be creative. In 1971, a physicist named Hounsfield introduced a known invention of his invention
Computerized Tomography
or commonly known as CT Scan. This Hounsfield invention responds to the challenges of conventional X-ray image imaging that CT can be able to image objects in 3 Dimensions composed of image slices (tomography) generated from algorithm calculations (computer program language). Hounsfield's work became a massive revolution in the world of medical or medical imaging which is a related series. Images / images of CT results can address our body structure in 3 dimensions, so that medically can be used as a tool for diagnosis required. To perpetuate its discoverer in CT there are CT or number
Hounsfield Unit (HU)
, but this discovery also meruapakan services Radon and Cormack.
In the 1990s, reborn a device known by name
Magnetic Resonance Imaging
. This invention device is no less great than CT, because it uses a different physics system. The term MRI uses its physical activity spin humans utilization while in a strong magnetic field and then with the same radio wave interference system with the Larmor frequency, generating an electrical signal. This signal is known as
Free Induction Decay
which is then evaluated with Fourier transform into 3 Dimensional image. This invention is also very phenomenal, because a new breakthrough that does not use ionizing radiation such as CT and Roentgen rays to produce an image with a very good resolution in imaging the human body structure, especially the head organs. Inventor MRI was awarded a Nobel Prize in Physics and Medicine in 2003.
This is a bit of the role of physics that is very revulgent change the world of medicine to be modern. Without the birth of X-rays, CT, and MR how can we know the position of abnormalities in our body or cancer? With the work of physicists, engineers, computer experts emerged a technology used for diagnosis. Many other technologies are developed by physicists and other scientists for medicine as well as ultrasonography, linear accelerator for radiotherapy, and also CT and 4 Dimensional ultrasound.
Application of energy (nuclear) in everyday life:
Technologies and techniques of nuclear use can provide great benefits and contributions to economic development and people's welfare. For example, nuclear could be used in agriculture, such as breeding Sorgum and Wheat plants by the method of mutation induction with Gamma rays.
In the field of medicine, nuclear engineering contributes no less great, that is,
three dimensional conformal radiotherapy therapy
(3D-CRT), which can develop surgical methods using ionizing radiation as its scalpel. With this technique, cases of malignant tumors that are difficult to reach with a conventional scalpel become insurmountable, even without damaging other tissues.
In the field of energy, nuclear can act as energy producer of Nuclear Power Plant (NPP). NPPs can generate greater energy than generators
Newton's legal application:
Law 1 newton:
an object retains its position
example: if we are in a car when the car suddenly forward our body tba2 pushed
to the back
Law 2 newton:
we are in the elevator
law 3 newton:
this is the action = reaction style
example: when we hit the blackboard (action) then the blackboard gives a reaction, when
the action is bigger than the reaction then the board will be broken and vice versa
