In the nineteenth century, physical sciences were divided into five distinct disciplines: physics, chemistry, astronomy, geology, and meteorology. The most fundamental of these is physics. In physics, we study matter, energy, and their interactions. The laws and principles of physics help us understand nature.
Physics is the foundation of all the sciences. To study biology, chemistry, or any other natural science, a firm understanding of the principles of physics is essential. For example, biology uses physics principles to understand how blood flows through the cardiovascular system, and chemistry relies on physics to understand atomic interactions and chemical reactions.
Technology is deeply rooted in the principles of physics. Everyday devices such as computers, smartphones, and the internet all rely on physics. Even advanced technologies like rockets, magnetic levitation trains, and medical innovations like PET scans and cancer-fighting nanobots are based on physics. Physics not only explains existing technologies but also drives the development of future innovations.
Physics is a vast field, and as technology progresses, the branches of physics continue to expand. Major branches of physics include:
The cubit was the measurement unit used by Egyptians to build the pyramids. The cubit is the measure from your elbow to the tip of your middle finger when your arm is extended.
Physics has a strong connection with mathematics. To understand nature and the physical world, we use mathematics as a tool. Therefore, learning physics requires a solid understanding of mathematical concepts.