There exists a range of modern applications of physics relating to the principles of electricity, magnetism, and light. The first principle of physics in the scenario in motion, which is seen when Mandy flies to Rome. The movement of an airplane applies the principle of aerodynamics called Bernoulli’s law. According to the law, fast-moving air holds low pressure as compared to slow-moving air. Since the air below the wings has low speed, it generates a high pressure that creates a lift that pushes the plane upward. By turning her cell phone on, she applies electromagnetism. Cell phones emit electromagnetic radiation and communicate through radiofrequency waves, which are a form of electromagnetic energy. If she had charged the phone through wireless charging, she would apply the principle of electromagnetism. The coils of wire in the charging pate create a magnetic field as the current flows through them. The use of a USB adaptor also applies the principle of electromagnetism and IC thermal regulation. The LED light next to the screen of the phone uses a light-emitting diode that contains a lead semiconductor light source. Electrons are converted into the light as they plow through the semiconductor. The generation of electricity by burning fossils applies the physics principles of heat and light, and it involves transforming mechanical energy, commonly known as heat into electrical energy using a generator. The use of portable solar is also an application of physics principles where light energy is converted into heat energy using silicon as a semiconductor.
Maxwell’s research led to the discovery of viscoelasticity. The concept is applied in various ways for both commercial and domestic use. Viscoelastic materials are used in making helmets, automobile bumpers, and on computer drives to protect users against shock. For instance, adding the dilatants viscoelastic materials on the interior of a helmet helps to reduce strain rates during an oblique impact. If you ride on a motorbike wearing a helmet, then you are using Maxwell’s research.
Scenario
Harvey is on a real estate business trip and sets up his alarm clock to wake him up. He irons his clothes using a steam iron. He switches on his radio to listen to weather updates. He proceeds to the kitchen, where he boils some warm water using an electric heater. He then connects his earphones to his cellphone before leaving the room and makes a call to his driver. While on the trip, he uses his camera to take pictures of the properties his Company intends to buy. Unfortunately, his camera does not hold power for long, and he has to ride back to the hotel to charge. Along the way, an approaching police car detects that they are overspeeding, and they are arrested.
The use of an alarm to wake up is a concept in physics that deals in the propagation and properties of sound. The alarm clock requires a battery with a charge to function, which falls under energy and electromagnetism. The use of an iron box applies the principle of heat and thermodynamics. Using an electric heater applies the concept of electromagnetism while using earphones brings in the physics concepts of sound and electromagnetism too. Using earphones to transfer sound involves the concept of magnetism. The approaching police car uses a radar gun to detect the speed of Harvey’s car applies the principle of sounds and soundwaves while both cars use energy to move.