Full HDTV (ultra-HD, true HDTV, 1080p)

Full HDTV (ultra-HD, true HDTV, 1080p) is a set of specifications for high-definition television (HDTV) systems. Full HDTV specifies a resolution of 1080p, which is the highest resolution currently available for HDTVs. Ultra-HDTV and true HDTV are both terms that have been used to describe Full HDTV. Which is better 4K or 1080p? There is … Read more

Carbon offset

A carbon offset is a certificate representing the reduction of one metric ton of carbon dioxide or its equivalent in other greenhouse gases. Carbon offsets are traded in voluntary and compliance markets. They are used to offset greenhouse gas emissions from activities such as travel, manufacturing, and electricity generation. Carbon offsets are a way to … Read more

Smart grid

A smart grid is an electricity delivery system that uses digital technology to detect, respond to, and manage fluctuations in electricity demand. The goal of a smart grid is to make the electricity system more efficient, reliable, and secure. Smart grids use a variety of digital technologies to detect and respond to changes in electricity … Read more


The term “ohm” is used to describe the unit of electrical resistance. The ohm is the SI unit of electrical resistance, named after Georg Simon Ohm. The symbol for the ohm is the Greek letter omega (Ω). What is an ohm equal to? An ohm is a unit of measure for electrical resistance. What is … Read more

Volt-ampere (VA)

Volt-ampere (VA) is a measurement of electrical power in an alternating current (AC) electrical system. VA is a product of the voltage (measured in volts) and the current (measured in amperes). VA = V * I. The volt-ampere is used as a unit of power in the electrical power industry. It is equal to the … Read more

International System of Units (SI)

The International System of Units, or SI, is the modern metric system of measurement. It is the world’s most widely used system of units, and is the standard metric system in use today. The SI system includes seven base units: the metre, kilogram, second, ampere, kelvin, mole, and candela. These units are used to measure … Read more

Hamming code

A Hamming code is a type of error-correcting code that can be used to detect and correct certain types of errors that can occur when data is transmitted or stored. Hamming codes are named after their inventor, Richard Hamming, who developed them in the 1950s. Hamming codes are used in a wide variety of applications, … Read more

Ampere per meter squared (A/m 2)

Ampere per meter squared (A/m2) is a measure of the strength of the magnetic field produced by an electric current. It is commonly used to express the strength of the magnetic field produced by electrical cables and other conductors. What is the value of 1 ampere? The value of 1 ampere is the current that … Read more


The term “ground” refers to the connection of a conductor to the earth or to some conducting body that serves in place of the earth. This connection provides a low-impedance path to the earth for stray currents. What is ground and example? The ground is the reference point in an electrical circuit from which voltages … Read more

Ampere per meter (A/m, Oe, oersted)

The SI unit of magnetic field strength is the Tesla. The Tesla can be expressed in terms of the more familiar unit of magnetic field strength, the gauss, by dividing by 10,000. The gauss is named after the German physicist Karl Friedrich Gauss. One gauss is equal to 10−4 teslas. The cgs unit of magnetic … Read more