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In physics, intensity is a measure of the time-averaged energy flux. The word "intensity" here is not synonymous with "strength", "amplitude", or "level", as it sometimes is in colloquial speech. For example, "the intensity of pressure" is meaningless, since the parameters of those variables do not match.

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Code Intensity

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Gentleman - Another Intensity

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Fazal Majid's high-intensity blog

A Microsoft staffer has published instructions on removing this on his blog. ... Fazal Majid's high-intensity blog, Copyright 2008, Fazal Majid. All rights reserved. ...www.majid.info/hiblog/

Joe Friel's Blog: Volume vs Intensity

But athletes tend to place a lot of value on volume than on intensity. ... Intensity for the purpose of this discussion refers to training done at or above ...www2.trainingbible.com/joesblog/2007/12/volume-vs-intensity....

Environment " carbon intensity | Blogs |

Carbon intensity is the amount of carbon emitted by US fossil fuel combustion ... New York Times science blog. Real Climate. AccuWeather. Environmental Journalism now ...blogs.reuters.com/environment/tag/carbon-intensity/

Wikipedia About Intensity

In physics, intensity is a measure of the time-averaged energy flux. The word "intensity" here is not synonymous with "strength", "amplitude", or "level", as it sometimes is in colloquial speech. For example, "the intensity of pressure" is meaningless, since the parameters of those variables do not match.

To find the intensity, take the energy density (that is, the energy per unit volume) and multiply it by the velocity at which the energy is moving. The resulting vector has the units of power divided by area (i.e. watt/m²). It is possible to define the intensity of the water coming from a garden sprinkler, but intensity is used most frequently with waves (i.e. sound or light).

Mathematical description

If a point source is radiating energy in three dimensions and there is no energy lost to the medium, then the intensity decreases in proportion to distance from the object squared. This is due to physics and geometry. Physically, conservation of energy applies. The consequence of this is that the net power coming from the source must be constant, thus:

P = \int I\, dA

where P is the net power radiated, I is the intensity as a function of position, and dA is a differential element of a closed surface that contains the source. That P is a constant. If we integrate over a surface of uniform intensity I, for instance over a sphere centered around a point source radiating equally in all directions, the equation becomes:

P = |I| \cdot A_{surf} = |I| \cdot 4\pi r^2 \,

where I is the intensity at the surface of the sphere, and r is the radius of the sphere. (A_{surf} = 4\pi r^2 is the expression for the surface area of a sphere). Solving for I, we get:

|I| = \frac{P}{A_{surf}} = \frac{P}{4\pi r^2}

If the medium is damped, then the intensity drops off more quickly than the above equation suggests.

Anything that can carry energy can have an intensity associated with it. For an electromagnetic wave, if E is the complex amplitude of the electric field, then the energy density of the wave is given by

U = \frac{n^2 \epsilon_0}{2} |E|^2 ,

and the intensity is obtained multiplying this expression by the velocity of the wave, c/n:

I = \frac{c n \epsilon_0}{2} |E|^2,

where n is the refractive index, c is the speed of light in vacuum and \epsilon_0 is the vacuum permittivity.

Alternative definitions of "intensity"

In photometry and radiometry intensity has a different meaning: it is the luminous or radiant power per unit solid angle. This can cause confusion in optics, where intensity can mean any of radiant intensity, luminous intensity or irradiance, depending on the background of the person using the term. Radiance is also sometimes called intensity, especially by astronomers and astrophysicists, and in heat transfer.

Search results for Intensity

intensity - Definition from the Merriam-Webster Online Dictionary

Definition of intensity from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.www.merriam-webster.com/dictionary/intensity

intensity - definition of intensity by the Free Online Dictionary ...

Information about intensity in the free online English dictionary and ... intensity level, strength ... pressure level - the physical intensity of sound ...www.thefreedictionary.com/intensity

Intensity - Books - Fiction | BarnesandNoble.com

Shop Barnes & Noble for "Intensity" by Dean Koontz. Find a wide selection of Horror books to choose from.search.barnesandnoble.com/Intensity/Dean-Koontz/e/9780553582...

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Intensity

This is a page in The Physics Hypertextbook™. It is a work in progress. ... rule the larger the amplitude, the greater the intensity, the louder the sound. ...hypertextbook.com/physics/waves/intensity/

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Database Recovery Tool is SharePoint-specific.

ThomasNetEmbedded with multiple recovery modes appropriate to corruption type and intensity, Kernel for SharePoint Server extracts files and documents from corrupt SharePoint database (MDF) and helps users regain access to them. Program is suited for instances when MDF database, in which all files and folders are contained, becomes corrupt and users with access permission fail to access these files or ...http://news.thomasnet.com/fullstory/559722

Africa: Continent Should Seek Favourable Trade Deals

AllAfrica.comTHE entry of China and India on the African market is causing a big stir particularly in the West. What seems to baffle the countries of the West is the speed and intensity of the economic bonding between China, India and Africa.http://allafrica.com/stories/200905111109.html

Russia again denies Canadians gold

National PostFor the second consecutive year, Team Canada came second to Russia at the IIHF world hockey championship. Russia edged Canada 2-1 in a high-intensity gold-medal final in Bern. To add further insult to injury, the gold medal was Russia/U.S.S.R.’s 25th of all time, dropping Canada to second place with 24 titleshttp://www.nationalpost.com/story.html?id=1582607

Game 4gettable

Los Angeles Daily NewsHOUSTON - The Lakers were no-shows for Game 4. Actually, that's not entirely true. They put on their purple-and-gold uniforms, tied their high tops tight and then strolled onto the court on schedule Sunday afternoon. It was then and there that they failed to show up and play with the required intensity to defeat the Houston Rockets. The Lakers got it wrong almost from the opening tip and lost to ....http://www.dailynews.com/ci_12341050?source=rss

Jillian Michaels: Secrets of 'The Biggest Loser'

Time MagazineFitness expert Jillian Michaels talks to TIME about how losing weight and eating right can help save your life (and make it easier to slide on top of that Ducati)http://www.time.com/time/arts/article/0,8599,1897204,00.html

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'Baby' delivers the Celtics late

Boston GlobeWe know that we're still the champs and, regardless of who we put out there on the court, we're going to be a tough team to beat. There's no words to describe our resiliency. Everybody saw it last year, [now] even with Kevin out. The intensity ... http://www.boston.com/sports/basketball/celtics/articles/200...

Lessons of Internet Marketing From FreshDirect

Wall Street JournalAt FreshDirect, the core of this intensity starts with daily focus. Each day our senior team starts with a formatted review of our immediate business -- yesterday, today, and tomorrow. Each manager uses customer-focused metrics to explain what is ... http://online.wsj.com/article/SB124205175154206817.html

Venture Funds Shift Their Energies

CNBCI think that’s a false generalization for people who take a very superficial view of clean technology,” said Vinod Khosla, the firm’s founder. “It’s not that hard to find ways around capital intensity. We are very active in doing that, and ... http://www.cnbc.com/id/30682604

Recharge your workout

Nassau GuardianBefore frustration pushes you over the edge and towards the cookie jar, consider the intensity of your weekly sweat sessions. If you tend to spend most of your workout time walking, Vaklev Bastian, a trainer at Mystical Fitness Gym, suggests you kick ... http://www.thenassauguardian.com/social_community/2944558562...

Sporadic play activity as beneficial to child health as continuous ...

PhysOrgNew research suggests for the first time that frequent bouts of sporadic activity could be just as beneficial to children's health as longer exercise sessions. A team from the University of Exeter measured the frequency, intensity and duration of ... http://www.physorg.com/news161257903.html

Search results for Intensity

Intensity Athletics

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intensity - Definition of intensity at YourDictionary.com

noun pl. intensities-·ties. the quality of being intense; specif., extreme degree of anything; great energy or vehemence of emotion, thought, or activityhttp://www.yourdictionary.com/intensity

intensity definition | Dictionary.com

Copy & paste this link to your blog or website to reference this pagehttp://dictionary.reference.com/browse/intensity?r=14

Amazon.com: Intensity: Dean Koontz: Your Store

Amazon.com: Intensity: Dean Koontz: Your Store ... Intensity and over 245,000 other books are available for Amazon Kindle – Amazon’s new wireless reading device.http://www.amazon.com/Intensity-Dean-Koontz/dp/0553582917

Blackmagic Design: Intensity

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Wikipedia results for Intensity

Intensity (physics) - Wikipedia, the free encyclopedia

In physics, intensity is a measure of the time-averaged energy flux. The word "intensity" here is not synonymous with "strength", "amplitude", or "level", as it sometimes is in ... http://en.wikipedia.org/wiki/Intensity

Luminous intensity - Wikipedia, the free encyclopedia

In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity ... http://en.wikipedia.org/wiki/Luminous_intensity

Intensity (disambiguation) - Wikipedia, the free encyclopedia

Intensity is a widely-used term, which can refer to: In colloquial use: Strength; Amplitude; Level; Magnitude; In physics: Intensity (physics), power per unit area (W/m 2)http://en.wikipedia.org/wiki/Intensity_%28disambiguation%29

Seismic scale - Wikipedia, the free encyclopedia

The original force or energy of an earthquake is measured on a magnitude scale, while the intensity of shaking occurring at any given point on the Earth's surface is measured on an ... http://en.wikipedia.org/wiki/Seismic_scale

Sound intensity - Wikipedia, the free encyclopedia

The sound intensity, I, (acoustic intensity) is defined as the sound power P ac per unit area A. The usual context is the noise measurement of sound intensity in the air at a ... http://en.wikipedia.org/wiki/Sound_intensity
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Big Baby: "We didn't bring the inte...

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Answers for Intensity

PrashantHow much intensity of magnetic field can be safely withstand by the human body ?PrashantI don't think a magnetic field would harm the human body. Unless you have metal somewhere inside of you!High Fructose Corn SyrupHow long into a moderate/high intensity cardio work out does the body begin to burn fat instead of glucose?High Fructose Corn SyrupI am assuming that you want to lose weight, you need to be concerned with how many calories you burn compared to how many you take in. Once you have used your glucose stores your body will start to us...yos_msnHow to control light intensity in biological experiments?yos_msnThe best light for stomata operation is the UV grow light ..unfortunately this is a ballasted lamp that does not respond well to a dimmer...but you can get a dimmer for all the others and lower light ...Anthony Cruz CWhat is the best form of high intensity cardio?Anthony Cruz CI'd suggest that any of those would work, all you have to do is committ to training in any one or two of them often enough to get some benefit. A couple of things I think you overlooked though: ...superobotzHow does the intensity of an earthquake change with distance from the epicenter?superobotzThe epicenter is the point on the surface above the location where the fault begins the slip which generates the earthquake. There is a common myth that most damage will occur near the epicenter of th...
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