Physics

Convex is used as rear view mirror in vehicles. A convex mirror, fish eye mirror or diverging mirror, is a curved mirror in which the reflective surface bulges toward the light source. The passenger-side mirror on a car is typically a convex mirror. In some countries, these are labeled with the safety... readmore

Water has maximum density at 4 degree centigrade. Water (H2O) is the most abundant compound on Earth’s surface, covering about 70%. In nature, it exists in liquid, solid, and gaseous states. It is in dynamic equilibrium between the liquid and gas states at standard temperature and pressure. At... readmore

Water does not boil at 273 Kelvin. The kelvin is a unit of measurement for temperature. It is one of the seven base units in the International System of Units (SI) and is assigned the unit symbol K. The Kelvin scale is an absolute, thermodynamic temperature scale using as its null point absolute zero.  Read More →

In the visible spectrum, the color having the shortest wavelength is red. A spectrum is a condition that is not limited to a specific set of values but can vary infinitely within a continuum. The word saw its first scientific use within the field of optics to describe the rainbow of colors in visible... readmore

Transformer is used to convert alternating current into direct current. A transformer is a static device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer’s coils. A varying current in the first or primary winding creates a varying... readmore

Glass is the best insulator. Glass is an amorphous (non-crystalline) solid material. Glasses are typically brittle, and often optically transparent. The most familiar type of glass, used for centuries in windows and drinking vessels, is soda-lime glass, made of about 75% silica (SiO2) plus Na2O, CaO... readmore

The fourth state of matter is plasma. The plasma effect is a computer-based visual effect animated in real-time. It uses cycles of changing colors warped in various ways to give an illusion of liquid, organic movement.  Read More →

Hydro power is a conventional source of energy. Hydro power, hydraulic power or water power is power that is derived from the force or energy of moving water, which may be harnessed for useful purposes. Prior to the development of electric power, hydro power was used for irrigation, and operation of... readmore

Radiation modes of heat transmission. In physics, radiation is a process in which energetic particles or energy or waves travel through a medium or space. There are two distinct types of radiation; ionizing and non-ionizing. Radiation with sufficiently high energy can ionize atoms. Most often, this occurs... readmore

Biogas is a non-conventional source of energy. Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen. Biogas originates from biogenic material and is a type of biofuel.  Read More →