Metal fuel is created when a metal is ground into a powder, which is then fed into a burner.

The strain gauge is generally glued (foil strain gauge) or deposited (thin-film strain gauge) onto a membrane.

Metamorphic rocks arise from the transformation of existing rock to new types of rock, in a process called metamorphism.

Meteorology is a branch of the atmospheric sciences which includes atmospheric chemistry and atmospheric physics, with a major focus on weather forecasting.

Meter data analytics is the analysis of data emitted by electric smart meters that record consumption of electric energy.

Meter data management (MDM) refers to software that performs long-term data storage and management for the vast quantities of data delivered by smart metering systems.

Methane is a chemical compound with the chemical formula CH4.

Methane hydrate is a cage–like lattice of ice inside of which are trapped molecules of methane, the chief constituent of natural gas. If methane hydrate is either warmed or depressurized, it will revert back to water and natural gas.

Methanol, also known as methyl alcohol amongst other names, is a chemical and the simplest alcohol commonly used as an antifreeze.

The double-hulled methanol carrier MILLENNIUM EXPLORER has twice the capacity of any other vessel of its type. Total cargo capacity is around 120,000m3. Methanol is transported in 12 cargo tanks.

Methanol fuel is an alternative biofuel for internal combustion and other engines, either in combination with gasoline or independently.

The metre is the base unit of length in the International System of Units (SI).

see POWER-SAVING DEVICES.

Lightweight, movable decks used on fast ferries. If traffic is freight dominated, the crew can hydraulically raise the mezzanine deck up to the deckhead to allow clearance for high freight vehicles.

The inventor of the Faraday Disk using electromagnatism to generate electricity.

Micro combined heat and power, micro-CHP, µCHP or mCHP is an extension of the idea of cogeneration to the single/multi family home or small office building in the range of up to 50 kW.

Micro hydro is a type of hydroelectric power that typically produces from 5 kW to 100 kW of electricity using the natural flow of water. These installations can provide power to an isolated home or small community, or are sometimes connected to electric power networks, particularly where net metering is offered.

A bio-electrochemical system that drives an electric current by using bacteria and a high-energy oxidant such as O2.

A local set of atmospheric conditions that differ from those in the surrounding areas, often with a slight difference but sometimes with a substantial one.

Small scale generation of heat and electricity by individuals, comminities or businesses as power alternatives or additions to existing power resources.