Physics

Ionizing radiation is used in radiotherapy to treat cancer and to sterilise medical equipment because it destroys cells. Basic objective of this lecture is to present…

Principle objective of this lecture is to present on Velocity-Time Graphs. Uniform accelerated motion is a motion with the constant acceleration (a – const). Slope (gradient) of the…

General objective of this lecture is to present on Matter and the Particle Model. Matter is anything that moves and anything that takes up space. Solids, Liquids and Gases. Here…

Principle purpose of this lecture is to present on Mass, Force and Gravity. Mass–Amount of stuff (atoms/molecules) in an object. Measured in kg. Force – Measures the gravitational…

The direction of the magnetic field at any point is tangent to the magnetic field line at that point. The aim of this lecture is…

Prime purpose of this lecture is to present on Magnetic Field Direction. Direction of magnetic field at any point is defined as the direction of motion of…

Magnets have been known for centuries. The Chinese and Greeks knew about the “magical” properties of magnets. The ancient Greeks used a stone substance called “magnetite.”…

Basic purpose of this lecture is to present on Lenses: Application of Refraction. There are two main types of lenses: convex lenses—these curve outwards and are fatter…

General purpose of this lecture is to present on Light Refraction and Lenses. Refraction fact 1: As light goes from one medium to another, the velocity changes! Refraction…

Light is a wave, kind of like a wave in the ocean. These light waves carry energy. This energy can do many interesting things, like help…

Major objective of this lecture is to present on Kinematic Equations. Here describe the definitions of position, distance, displacement, speed, velocity and acceleration and distinguish whether…

The aim of this lecture is to present on the Effects of Radiation on Living Things. Major focus of this lecture is what types of…