Browse Definitions :
Definition

cold fusion

Not to be confused with ColdFusion , a software product, cold fusion is a hypothetical process in which hydrogen fusion supposedly occurs at room temperature. The topic is controversial, because the notion appears to defy the laws of physics. Some scientists believe that cold fusion represents a real phenomenon and that it will someday form the basis for an abundant, cheap source of energy. Others maintain that cold fusion, like perpetual motion, is impossible.

Hydrogen fusion as it is currently known is the process responsible for the energy output of the sun and most other stars. It does not ordinarily take place unless there is extreme heat (millions of degrees Celsius ) and extreme pressure. The only officially documented examples of human-generated fusion involve the explosions of hydrogen bombs. In the hydrogen fusion process, the nuclei of hydrogen atom s are driven together to form helium nuclei. It takes four hydrogen nuclei to ultimately produce a single helium nucleus . Energy, and certain subatomic particles, are emitted as byproducts.

After the first hydrogen bombs were successfully tested, scientists and engineers began searching for a way to control hydrogen fusion reactions and harness the energy in a constructive manner. Hydrogen fusion generates no dangerous nuclear waste, is far more efficient than the fission processes currently used in nuclear reactors, and has as its basis the most abundant element in the universe (hydrogen). In 1989, Stanley Pons and Martin Fleischmann of the University of Utah claimed to have produced hydrogen fusion in a controlled experiment at room temperature. The news created a stir among scientists, engineers, government agencies, and the public. It also caused a controversy among physicists that has been going on ever since.

The cold-fusion experiments conducted by Pons and Fleischmann involved deuterium, an isotope of helium in which the nucleus contains a neutron as well as a proton . (Ordinary hydrogen has a nucleus consisting of a single proton only.) The deuterium was packed into electrodes made of a metallic element known as palladium. Under certain conditions, it appeared that energy was produced along with helium nuclei at room temperature, in the same way, and according to the same mathematical formulae, as observed in hydrogen fusion at high temperatures. But these results have proven difficult to reproduce. Even in apparently successful cold-fusion experiments, no one has yet harnessed the energy and thereby built a functional reactor.

This was last updated in September 2005

Continue Reading About cold fusion

Join the conversation

2 comments

Send me notifications when other members comment.

Please create a username to comment.

Hello, Cold Fusion has come a long way since 2005. We are at the break of a energy revolution, the products are getting ready to hit the market.

I also noted that some of the information is incorrect... ex Deuterium is a isotope of hydrogen, not Helium.

I want to request an update :)

Thanks :)
Cancel
Cold Fusion does not break the laws of physics, and - it has been replicated all over the world thousands of times in countless laboratories, experiments and devices.

It would be cool if you did some more research, for example about the public demonstrations thats been made the two last year and then update your article or provide one with better data.

Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

  • compliance as a service (CaaS)

    Compliance as a Service (CaaS) is a cloud service service level agreement (SLA) that specified how a managed service provider (...

  • data protection impact assessment (DPIA)

    A data protection impact assessment (DPIA) is a process designed to help organizations determine how data processing systems, ...

SearchSecurity

  • Port Scan

    A port scan is a series of messages sent by someone attempting to break into a computer to learn which computer network services ...

  • DMZ (networking)

    In computer networks, a DMZ (demilitarized zone), also sometimes known as a perimeter network or a screened subnetwork, is a ...

  • quantum supremacy

    Quantum supremacy is the experimental demonstration of a quantum computer's dominance and advantage over classic computers by ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

SearchStorage

Close