Thin lenses

A thin lens is a lens with a thickness much smaller than its focal length. It is a simple optical device that can be used to bend or focus light, and is commonly used in various optical systems, such as cameras, microscopes, telescopes, and eyeglasses. There are two types of thin lenses: convex and concave.…

Dispersion of light by a prism

When light passes through a prism, it undergoes dispersion, which means that the different colors of light that make up white light are separated and spread out. This happens because each color of light has a slightly different wavelength and therefore bends at a slightly different angle as it enters and exits the prism. The…

Deviation

Deviation generally refers to a departure or divergence from a standard, norm, or expected behavior or outcome. It can be used in various contexts, including statistics, science, engineering, and management. In statistics, deviation refers to the difference between a data point and the mean of a data set. It is commonly measured as standard deviation,…

Total internal reflection

Total internal reflection is a phenomenon that occurs when a light ray passes from a medium with a higher refractive index to a medium with a lower refractive index at an angle greater than the critical angle. When this happens, the light ray is reflected back into the higher refractive index medium rather than being…

Spherical surfaces

Spherical surfaces are three-dimensional surfaces that have the same curvature in all directions. They are often described mathematically using the equation of a sphere: (x-a)^2 + (y-b)^2 + (z-c)^2 = r^2 where (a,b,c) is the center of the sphere, and r is its radius. Spherical surfaces can be found in many different contexts, such as…

Refraction at plane

Refraction at a plane occurs when a light wave passes through an interface between two materials with different refractive indices. When this happens, the direction of the light wave changes, and the wave bends either towards or away from the normal, which is an imaginary line perpendicular to the surface of the interface. The amount…

Reflection

Reflection is the process of thinking deeply about a particular situation, experience, or idea. It involves examining one’s own thoughts, feelings, and behaviors and gaining insights about oneself and the situation at hand. Reflection can help people gain a better understanding of themselves, their experiences, and their perspectives. It can also help them make better…

Rectilinear propagation of light

Rectilinear propagation of light refers to the phenomenon where light travels in straight lines in a uniform medium such as air, water, or vacuum. This is a fundamental property of light and is a consequence of the wave nature of light. When light travels through a medium with a uniform refractive index, it experiences no…

Gamma rays

Gamma rays are a form of electromagnetic radiation that have extremely high energy and short wavelengths. They are produced by the decay of atomic nuclei, by nuclear reactions, or by other high-energy processes. Gamma rays are the most energetic type of electromagnetic radiation and are extremely penetrating, able to pass through most materials. They can…

X-Rays

X-rays are a form of electromagnetic radiation with wavelengths shorter than those of visible light. They were discovered by Wilhelm Conrad Roentgen in 1895 and have since become an important tool in medicine, industry, and scientific research. In medicine, X-rays are used to create images of the inside of the body. This allows doctors to…