Fuel cells produce electricity by utilizing the power generated by electrochemical reactions and convert potential chemical energy into electrical and heat energy. They use external sources of chemical energy, such as hydrogen and oxygen, to produce energy. Electrochemical reactions in the fuel cells oxidize hydrogen, which reacts with oxygen to form water, releasing electrons that flow through the external circuit as electric current.

A fuel cell is a device that converts chemical energy to electrical energy in the presence of an electrolyte. It has two electrodes - an anode and a cathode, which facilitate the movement of positively and negatively charged ions to produce water and heat as by-products. Therefore, defense agencies are inclined toward fuel cell technology for their military aircraft (manned and unmanned).

The production of semiconductors involves different steps that are achieved using semiconductor production equipment. The production process involves two categories, namely the front end of the line and the back end of the line (BEOL). FEOL refers to gate formation, while BEOL refers to interconnect formation or wiring development.

Frac sand, short for fracturing sand, is a type of high-purity quartz sand used in hydraulic fracturing (fracking) operations in the oil and natural gas industry.

Foreign exchange is a mechanism that allows people to swap currencies from other countries. This is done with credit instruments such as foreign currency bills, bank draughts, and telephone transfers. An electronic network of banks, financial institutions, brokers, and private traders facilitates capital transfers. Forex has a wide range of uses, including transferring payments to support the trade of commodities and services between nations.

A flat panel display is an electronic viewing device to see content such as images, videos, text, or other visual material. Flat panel displays are used in a wide range of entertainment products, such as consumer electronics like personal computers, mobile devices, televisions, and other display appliances, and in other products such as medical, transportation, and industrial equipment. A flat panel display equipment is any machinery that is used to manufacture flat panel displays for the above-mentioned applications.

Fish sauce is a liquid condiment made from fish that have been coated in salt and fermented. Fish sauce that is naturally fermented has no sediment but may contain a small quantity of salt crystals and be reddish-brown in color. Fish sauce imparts a savory umami flavor to dishes. Fish sauce is a rich source of vitamins and minerals such as amino acids, lysine, and vitamin B12.

Financial analytics is the process of using data analysis and mathematical models to evaluate financial data and make predictions, leading to informed financial decision-making. This practice involves the examination of various financial information, including historical and current financial data, to gain insights into an organization or individual financial health and performance.

Feldspar is a group of rock-forming minerals (aluminosilicate minerals) containing potassium, sodium, or calcium. The ratio of silicon and aluminum in feldspar can range from 3:1 to 1:1. Feldspar is naturally found as a rock-forming mineral and is found on more than 50% of the earth's crust. The major applications of feldspar are in the glass and ceramic industry.

Expanded polystyrene is made from polystyrene solid beads, which are produced from the emulsion polymerization of the styrene monomer. It is a rigid transparent thermoplastic, which has good electrical insulating properties and physical properties. Expanded polystyrene is used in sheet materials, molder products, and foams. It is a rigid plastic that contains an expansion agent. It is commonly used in building and construction, packaging, and other applications due to its high insulation properties and strength. Expanded polystyrene is also used in transportation packaging, loose-fill packaging, and protective and display packaging.