The concept of quantum spacetime is a generalization of the usual concept of spacetime in which some variables that ordinarily commute are assumed not to commute and form a different algebra.

BASICS

What is Energy?

Energy is the ability to do work or change

Scientists define energy as the ability to do work. Modern civilization is possible because people have learned how to change energy from one form to another and then use it to do work.
People use energy to walk and bicycle, to move cars along roads and boats through water, to cook food on stoves, to make ice in freezers, to light our homes and offices, to manufacture products, and to send astronauts into space.

There are many forms of Energy:

Energy can be converted from one form to another

For example, the food you eat contains chemical energy, and your body stores this energy until you use it as kinetic energy during work or play. The stored chemical energy in coal or natural gas and the kinetic energy of water flowing in rivers can be converted to electrical energy, which can be converted to light and heat.

Energy sources are renewable or nonrenewable
There are many different sources of energy, but they can all be divided into these two categories

Sources of Energy

The energy we use to power everything from our homes to schools and workplaces comes from a variety of different sources. These can be broken down into renewable and non-renewable energy sources.

Renewable Energy Sources

A Renewable Energy source is any natural resources that can replace itself quickly and dependably.

What are Sources of Renewable Energy?

Renewable energy sources are plentiful, sustainable and kind to the environment. And the great thing is, they'll never run out!

Solar Energy

Energy that comes from the sun
Converted into heat, light and electricity

Wind Energy

Energy in moving air, harnessed by wind turbines
Used to produce electricity

Hydropower

Energy in the force of moving water
Captured by dams in hydropower plants and converted to electricity

Biomass

Energy contained in organic matter
Used to generate electricity

Geothermal Energy

Energy that comes from heat generated by the Earth
Used to produce electricity and can provide heat and hot water

Non-Renewable Energy Sources

A non-renewable energy source is a source with a finite supply (in other words, it'll eventually run out).

What are Sources of Non-Renewable Energy?

Non-renewable energy comes from sources that have a limited supply. Most non-renewable energy sources are fossil fuels, which are generally bad news for the environment.

Oil

Comes from the remains of plants that died hundreds of millions of years ago
Can be extracted and refined to make gasoline, diesel and jet fuel

Coal

Comes from the remains of plants that died hundreds of millions of years ago
Has the highest level of carbon of all fossil fuels

Nuclear Energy

Energy released when atoms' nuclei are fused together (fusion) or split apart (fission)

Natural Gas

Formed from the remains of tiny sea plants and animals that died millions of years ago Mainly composed of methane

Information about Renewable Energy

> iRenewable Energy

Information about Sustainability

> Info Sustainability

⭐Info Science

> Info Science

Science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

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