Comprehensive Oilgae Report

A detailed report on all aspects of the algae fuel value chain, the Comprehensive Oilgae Report will be of immense help to those who are on the threshold of investing in algae biofuels. More ››

Algae-based Wastewater Treatment

Compiled by a diverse team of experts, with experience in scientific and industrial fields, the Comprehensive Report for Wastewater Treatment Using Algae is the first report that provides in-depth analysis and insights on this important field. It uses innumerable data and information from a wide variety of expert sources and market studies, and distills these inputs and data into intelligence and a roadmap that you can use. More ››

Comprehensive Guide for Algae-based Carbon Capture

A Comprehensive Guide for Entrepreneurs and Businesses Who Wish to get a Basic Understanding of the Business Opportunities and Industry Dynamics of the Algae-based CO2. More ››


Comprehensive Report on Attractive Algae Product Opportunities

This is for entrepreneurs and businesses who wish to get a basic understanding of the algae fuel business and industrThe report provides an overview of the wide range of non-fuel applications of algae – both current and future prospects. It will provide entrepreneurs with an idea of how to derive more benefits from their algal energy ventures. The report provides detailed case studies, success stories and factoids of companies that have been involved in the algae products venture. More ››

Comprehensive Castor Oil Report

There is no other comprehensive report available for castor oil anywhere in the world. This is the first of its kind, and currently, the only one. More ››

Bioplastics Market & Strategy Advisor

Bioplastics Market & Strategy Advisor, published by the Bioplastics Guide, is a unique guiding framework for businesses and entrepreneurs to chart a way forward provides a critical analysis of the status, opportunities & trends of the global bioplastics sector. More ››

Algae - Food and Feed

Edible Sea-weeds 

Hydrocolloids

Animal and Fish Feed

Algae-Useful Substances

Pigments

PUFAs

Vitamins

Anti-oxidants


Algae for Pollution Control

Other Novel Applications

Radiant Energy Production, Applications - Reference & Resources


Nature gave us oil from algae; perhaps we should try Natures way again

Content derived from Wikipedia article on Radiant Energy

Radiant energy

Radiant energy is the energy of electromagnetic waves. The term is most commonly used in the fields of radiometry, Solar energy, heating and lighting, but is also used less frequently in other fields (such as telecommunications). The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time and, like all forms of energy, its SI unit is the joule. In applications involving transmission of power from one location to another, "radiant energy" is sometimes used to refer to the electromagnetic waves themselves, rather than their energy (a property of the waves). 

Don't Miss It! Get Latest from Energy Delivered in Your Mailbox. Free!

Contents

1 Analysis

2 Open systems

3 Applications and patents

4 SI radiometry units

5 See also

5.1 Main

5.2 Science

5.3 Spectrum

6 References and further reading

6.1 General

6.2 Patents

6.3 Other

Analysis

Because electromagnetic (EM) radiation can be considered to be a stream of photons, radiant energy can be viewed as the energy carried by these photons. Alternatively, EM radiation can be viewed as an electromagnetic wave, which carries energy in its oscillating electric and magnetic fields. These two views are completely equivalent, and are reconciled to one another in quantum field theory.

EM radiation can have various frequencies. The bands of frequency present in a given EM signal may be sharply defined, as is seen in atomic spectra, or may be broad, as in blackbody radiation. In the photon picture, the energy carried by each photon is proportional to its frequency. In the Wave picture, the energy of a monochromatic wave is proportional to its intensity. This implies that if two EM waves have the same intensity, but different frequencies, the one with the higher frequency "contains" fewer photons, since each photon is more energetic.

When EM waves are absorbed by an object, the energy of the waves is typically converted to heat. This is a very familiar effect, since sunlight warms surfaces that it irradiates. Often this phenomenon is associated particularly with infrared radiation, but any kind of electromagnetic radiation will warm an object that absorbs it. EM waves can also be reflected or scattered, in which case their energy is redirected or redistributed as well.

Open systems

Radiant energy is one of the energy sources that can be used to power an open system. Such an open system can be man-made (such as a Solar Energy collector), or natural, such as the Earth's atmosphere. In geophysics, transparent greenhouse gases trap the sun's radiant energy (at certain wavelengths), allowing it to penetrate deep into the atmosphere or all the way to the Earth's surface, where they are re-emitted as longer wavelength radiation (chiefly infrared radiation). Radiant energy is produced in the sun as a result of nuclear fusion.

Applications and patents

 Radiant energy, as well as convective and conductive energy, is used for heating homes. It can be generated electrically by infrared lamps, or can be absorbed from sunlight and used to heat water. Since radiant energy is really just electromagnetic radiation under another name, it is the basis of a wide range of communication technologies using radiofrequency and microwave radiation.

 One of the earliest wireless telephones to be based on radiant energy was invented by Nikola Tesla. The device used transmitters and receivers whose resonances were tuned to the same frequency, allowing communication between them. In 1916, he recounted (see Anderson's book, below) an experiment he had done in 1896. He recalled that "Whenever I received the effects of a transmitter, one of the simplest ways [to detect the wireless transmissions] was to apply a magnetic field to currents generated in a conductor, and when I did so, the low frequency gave audible notes."

 The United States Patent Offices has a classification of radiant energy for patent applications (Class 250, a residual class for methods and apparatus involving radiant energy). This class provides for all methods and apparatus for using, generating, controlling or detecting radiant energy, combinations including such methods or apparatus, subcombinations of same and accessories therefore not classifiable elsewhere by the patent office.

SI radiometry units

SI radiometry units Quantity Symbol SI unit Abbr. Notes

Radiant energy Q joule J energy

Radiant flux Φ watt W radiant energy per unit time, also called radiant power

Radiant intensity I watt per steradian Wsr−1 power per unit solid angle

Radiance L watt per steradian per square metre Wsr−1m−2 power per unit solid angle per unit projected source area.

 Sometimes confusingly called "intensity".

 Irradiance E watt per square metre Wm−2 power incident on a surface.

 Sometimes confusingly called "intensity".

 Radiant exitance / Radiant emittance M watt per square metre Wm−2 power emitted from a surface.

 Sometimes confusingly called "intensity".

Spectral radiance Lλ

or

Lν watt per steradian per metre3 or

watt per steradian per square metre per hertz

 Wsr−1m−3

or

Wsr−1m−2Hz−1

commonly measured in Wsr−1m−2nm−1

Spectral irradiance Eλ

or

Eν watt per metre3 or

watt per square metre per hertz Wm−3

or

Wm−2Hz−1 commonly measured in Wm−2nm−1

See also

Luminous energy

Power

Radiometry

Federal Standard 1037C

Transmission

Electrostatics

Science

Photoelectric effect

Zero-point energy

Open system

Cosmic microwave background radiation

Schumann resonance

Spectrum

Shortwave radiation

Longwave radiation

Ionizing radiation

Radio spectrum

References and further reading

General

^ "Radiant energy". Federal standard 1037C

Patents

U.S. Patent 0685957  - Apparatus for the utilization of radiant energy - N. Tesla

U.S. Patent 0685958  - Method of utilizing of radiant energy - N. Tesla

U.S. Patent 3971938  - Method of generating electricity from radiant energy called variable polarizability capacity generator - L. R. O'Hare

Other

Caverly, Donald Philip, "Primer of electronics and radiant energy" New York, McGraw-Hill, 1952.

Hardis, Jonathan E., "Visibility of Radiant Energy". PDF.

Lighting Design Knowledgebase

Anderson, Leland I. (editor), Nikola Tesla On His Work With Alternating Currents and Their Application to Wireless Telegraphy, Telephony and Transmission of Power, 2002, ISBN 1-893817-01-6

Retrieved from http://en.wikipedia.org/wiki/Radiant_energy

Notes:
  • Wed like to regularly add more useful content and web resources to Oilgae.com. Should you know of any good web resource for Biodiesel production from algae, do let us know by sending a note to [narsi]@[esource].[in] (remove [ ] for the email address). Many thanks for your patience.
  • All content at Oilgae are available for reproduction and usage under the GNU Free Documentation License. Please see explanation at the end of this page for more details.

Add Links/Submit Links: Do you have a web resource that belongs to here? If you have a web site that you wish to include in this page, do let us know the details by sending a note about your URL to [narsi]@[esource].[in] to add URL (pl remove the [ ] to get my email address!). Well quickly review the web site, and if found relevant, add it to the database. Thanks!

Oilgae.com content is available under GNU Free Documentation License: All content at Oilgae.com is licensed under the GNU Free Documentation (GFDL). Put simply, under this license, anyone is free to copy & use any amount of content @ Oilgae.com, make changes to it and use it in any way they wish, as long as they also allow the same rights to anyone else for this content and give credits to Oilgae by giving a link to the specific page/s from where the content was taken (a mention of Oilgae.com and a brief description about the site is enough for offline usage). Put not so simply, see the Oilgae.com GNU Free Documentation License .

This page uses material from the Wikipedia article Radiant energy

About Oilgae - Oilgae - Oil & Biodiesel from Algae has a focus on biodiesel production from algae while also discussing alternative energy in general. Algae present an exciting possibility as a feedstock for biodiesel, and when you realise that oil was originally formed from algae - among others - you think "Hey! Why not oil again from algae!"

To facilitate exploration of oil production from algae as well as exploration of other alternative energy avenues, Oilgae provides web links, directory, and related resources for algae-based biofuels / biodiesel along with inputs on new inventions, discoveries & breakthroughs in other alternative energy domains such as solar, Wind nuclear, hydro, Geothermal hydrogen & fuel cells, gravitational, geothemal, human-powered, Ocean & wave / tidal energy.



Get in Touch

Send us a message to know more on how we can help your organisation.