Solar eclipse of March 9, 1997 - Revision history

en>JaconaFrere: Reverted 1 edit by LAla168462353 identified as test/vandalism using STiki

2014-11-07T12:09:52Z

Reverted 1 edit by LAla168462353 identified as test/vandalism using STiki

← Older revision		Revision as of 14:09, 7 November 2014
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	~~The '''Umkehr''' is the time variation~~ of ~~the ratio of the scattered intensity at two different wavelengths. The word means 'reversal'~~ in ~~German. The '''Umkehr effect''' is observed when measurements are made with [[ultraviolet]] [[spectrophotometer]] of~~ the ~~ratio of~~ the ~~[[zenith]] sky light intensities of two wavelengths~~ in the ~~solar ultraviolet when the sun is near the horizon. The shorter of two wavelengths (intensity ''I'') is strongly absorbed~~ and other ~~(intensity ''I' '')~~ is ~~weakly absorbed. If~~ the ~~value~~ of ~~log(''I''/''I' '') is plotted against the sun's [[zenith angle]], it is observed that this log~~-~~intensity ratio decreases~~ as the ~~zenith angle increases until a minimum is reached for a zenith angle of about 8<sup>0</sup> (when the wavelengths are 3114~~ and 3324 A<sup>0</sup>).<ref name="mateer1964">{{cite journal\|last=Mateer\|first=C. L.\|date=1964-04\|title=A study of the information content of umkehr observations\|journal=Ph.D. Thesis\|publisher=University of Michigan\|pages=4–6\|url=http://~~deepblue~~.~~lib.umich.edu~~/~~bitstream~~/~~2027.42/6489/5/bac8981~~.~~0001.001.pdf\|accessdate=2009~~-~~11-25}}</ref> This effect was first noticed by Götz in 1930. The Umkehr measurement~~ is ~~known as customarily N-value and is given by~~ the ~~logarithm base 10~~ of the ~~ratio of cloudless zenith sky intensitities~~ at ~~two different wavelengths scaled by a multiplicative factor 100 plus a constant which depends on instruments and extraterrestrial radiation~~. ~~Methods for deriving vertical distribution from~~ the ~~umkehr measurements were developed by Götz, Dobson~~ and ~~Meetham in 1934,~~<~~ref name="Gotz1934"~~>~~Götz, F. W. P., A. R. Meetham, and G. M. B. Dobson, Proc. Roy. Soc. A 145, 416, 1934.~~<~~/ref~~> ~~using the [[Dobson ozone spectrophotometer]] developed by [[Gordon Dobson]]. In 1964 Carlton Mateer provided analysis on information content in umkehr measurements.~~		They are typically a free website that are pre-designed for enabling businesses of every size in marking the presence on the internet and allows them in showcasing the product services and range through images, contents and various other elements. This one is one of the most beneficial features of Word - Press as this feature allows users to define the user roles. In case you loved this article and you would like to receive more info relating to [http://xd03.com/WordpressBackup578163/ backup plugin] i implore you to visit the website. Step-4 Testing: It is the foremost important of your Plugin development process. After confirming the account, login with your username and password at Ad - Mob. In the most current edition you can customize your retailer layout and display hues and fonts similar to your site or blog. <br><br>

	~~<math>N(\theta) = 100 \log_{10} \frac{I(\lambda',\theta)}{I(\lambda,\theta)} + K</math>~~		Any business enterprise that is certainly worth its name should really shell out a good deal in making sure that they have the most effective website that provides related info to its prospect. Best of all, you can still have all the functionality that you desire when you use the Word - Press platform. This may possibly also permit it currently being seriously straightforward to modify the hues within your Ad - Sense code so the ads blend nicely with the many term broad internet word wide web web page in case you can come to your conclusion to run the adverts. Apart from these, you are also required to give some backlinks on other sites as well. You can also get a free keyword tool that is to determine how strong other competing sites are and number of the searches on the most popular search sites. <br><br>Photography is an entire activity in itself, and a thorough discovery of it is beyond the opportunity of this content. It was also the very first year that the category of Martial Arts was included in the Parents - Connect nationwide online poll, allowing parents to vote for their favorite San Antonio Martial Arts Academy. You can now search through the thousands of available plugins to add all kinds of functionality to your Word - Press site. User friendly features and flexibility that Word - Press has to offer is second to none. Socrates: (link to ) Originally developed for affiliate marketers, I've used this theme again and again to develop full-fledged web sites that include static pages, squeeze pages, and a blog. <br><br>Digg Digg Social Sharing - This plugin that is accountable for the floating social icon located at the left aspect corner of just about every submit. This plugin allows a webmaster to create complex layouts without having to waste so much time with short codes. re creating a Word - Press design yourself, the good news is there are tons of Word - Press themes to choose from. If you choose a blog then people will be able to post articles on your site and people will be able to make comments on your posts (unless you turn comments off). If your blog employs the permalink function, This gives your SEO efforts a boost, and your visitors will know firsthand what's in the post when seeing the URL. <br><br>You will know which of your Word - Press blog posts are attracting more unique visitors which in turn will help you develop better products and services for your customers. Here's a list of some exciting Word - Press features that have created waves in the web development industry:. Must being, it's beneficial because I don't know about you, but loading an old website on a mobile, having to scroll down, up, and sideways' I find links being clicked and bounced around like I'm on a freaking trampoline. Web developers and newbies alike will have the ability to extend your web site and fit other incredible functions with out having to spend more. Verify whether your company has a team of developers or programmers having hands-on experience and knowledge about all Word - Press concepts.

	~~Considering light which~~ is ~~scattered only once~~ in the ~~atmosphere~~, the ~~light received by~~ the ~~instrument at surface is contributed by light scattered downward from all~~ the ~~levels~~ in the ~~atmosphere~~. ~~The amount~~ of ~~light contributed by scattering at any particular level depends~~ on (a) the ~~number~~ of ~~air molecules at~~ that ~~level~~ and (b) ~~the absorption by ozone~~ and ~~scattering by air moleculaes both before~~ and ~~after scattering~~. As the ~~height increases contribution~~ of ~~effect (~~a~~) decreases and contribution of effect (b) increases~~. ~~For~~ a ~~given zenith angle~~, the ~~scattered light contribution comes~~ from ~~well defined layer of atmosphere, which can~~ be ~~termed as an effective scattering height. The effective scattering height depends~~ on ~~the ozone absorption coefficient~~ and on the ~~solar zenith angle~~, ~~increasing as with each of these~~. ~~The effective scattering height~~ will ~~always be higher for shorter wavelength~~ which is more ~~strongly absorbed~~. As the ~~sun approaches the horizon~~, ~~the two intensities decreases, but intensity '~~'I'~~' decreasing more rapidly than ''I' ''. However~~, ~~when the effective scattering height for the short wavelength is above the ozone maximum~~, ~~''I'' decreases more slowly then ''I' ''~~, ~~because the ozone absorption occurs mostly in the shorter vertical path after the scattering event~~, and ~~the ratio '~~'I/I'~~'' increases until the effective scattering height for ''I' '' is also above the ozone maximum~~. ~~This reversal (Umkehr) or inversion implies~~ the ~~existence of maximum of ozone concentration at some level in the atmosphere~~.~~<ref name=mateer1964 />~~

	~~The resulting ozone profile derived from reduction~~ of ~~these measurements is quite dependent~~ on ~~the algorithm used. The most current algorithm is I. Petropavlovskikh~~ and ~~P.K. Bhartia (2004). Current description can be found here: http://www.srrb.noaa~~.~~gov/research/umkehr/~~

	~~[[File:Example Plot of Umkehr curve..tif\|thumb\|Example of Umkehr curve from a Dobson Ozone Spectrophotometer]]~~

	~~==References==~~
	~~<references/>~~

	~~[[Category:Scattering, absorption and radiative transfer (optics)]]~~

139.228.106.142 at 14:05, 17 June 2013

2013-06-17T14:05:05Z

← Older revision		Revision as of 16:05, 17 June 2013
Line 1:		Line 1:
	~~Most men and women would agree that~~ the ~~most effective cooks and chefs~~ are the ~~ones know how to use their kitchen knife~~. ~~Whether you are~~ a ~~qualified chef or you adore eating scrumptious meals, cutlery knives~~ are ~~nevertheless crucial so they ought to be trustworthy~~ and ~~safe to use~~. ~~If you have any inquiries with regards to exactly where and how to What R The Best Kitchen Knives use [~~http://~~www~~.~~thebestkitchenknivesreviews~~.~~com~~/ ~~japanese best kitchen knives], you can speak to us at our own internet site~~. The ~~cutlery set contains fork, spoon~~ and ~~knife which are meant for providing sophistication to your dinning manners. The list I have~~ given ~~is only~~ a ~~sample of Best Kitchen Prep Knife what you can get to set up your kitchen to feel like~~ a ~~definitely enjoyable place where you can destress~~ from the ~~day~~ and ~~loosen up and make some beautiful meals.~~<br>~~<br>Former astronaut~~ and ~~existing Mission to Mars advocate Buzz Aldrin made PayPal Galactic known to the globe~~. ~~At least four memorials to American World War I casualties have fallen into disrepair or fallen down~~. ~~Park Slope may be excellent~~, ~~with dozens of attractions within a few square walkable blocks - from banks to groceries to museums and libraries~~, ~~a zoo~~, ~~an Iron Chef and a Superheroes Store~~. ~~I say three necessary ones and you get that in this set~~. In ~~no way put a damp knife~~ in ~~the block~~.<br><br>The ~~Wusthof Grand Prix II 3-Piece Chef's Knife Set includes an 8-inch chef knife,~~ a ~~6-inch sandwich knife~~ and ~~a 3-1/2-inch paring knife. Cutlery Roll Knife Set is made~~ by ~~Victorinox~~ and ~~consists~~ of a ~~chef's knife, paring knife, boning knife, bread knife, carving knife with a sharpening steel~~ and ~~incorporates a roll for storing your knifes~~. ~~This set is produced from stamped high-carbon stainless steel and~~ a ~~great get for~~ the ~~additional qualified cook~~. ~~Forschner is definitely the ideal knife dollars. I set its temp.<br><br>Just click~~ on the ~~knife image above~~ and ~~when you get to~~ the ~~Victorinox 40570 web page~~, ~~scroll down to the testimonials section~~. The ~~top rated-rated sharpener pictured right here~~ is the ~~one particular~~ I ~~received from my son at Christmas~~. It is ~~simple to use~~ and ~~operates~~ for ~~my 6" chef~~'~~s knife... as nicely as my smaller paring knives. Two Knives - An 8-inch chef~~'~~s knife and a three 1/two-inch paring knife, can tackle just about any cutting activity~~. ~~Hold~~ the ~~knife firmly~~ in ~~your hand and cut away from~~ the ~~physique~~.<br>~~<br>A wide blade permits you to use this knife as a scoop to quickly choose up all~~ the ~~fine pieces~~. ~~Culinary school chef instructors have praised the Victorinox brand,~~ and ~~price it as a wonderful alternative to the high priced German knives such as the Wusthof~~. ~~This is why we~~ can ~~claim that high quality is not compromised in this price range priced knife~~. ~~If you are~~ a ~~chef just starting out~~, ~~you may well not be capable to purchase a high-end knife set. You may possibly even take into consideration buying a single knife at a time.~~		The '''Umkehr''' is the time variation of the ratio of the scattered intensity at two different wavelengths. The word means 'reversal' in German. The '''Umkehr effect''' is observed when measurements are made with [[ultraviolet]] [[spectrophotometer]] of the ratio of the [[zenith]] sky light intensities of two wavelengths in the solar ultraviolet when the sun is near the horizon. The shorter of two wavelengths (intensity ''I'') is strongly absorbed and other (intensity ''I' '') is weakly absorbed. If the value of log(''I''/''I' '') is plotted against the sun's [[zenith angle]], it is observed that this log-intensity ratio decreases as the zenith angle increases until a minimum is reached for a zenith angle of about 8<sup>0</sup> (when the wavelengths are 3114 and 3324 A<sup>0</sup>).<ref name="mateer1964">{{cite journal\|last=Mateer\|first=C. L.\|date=1964-04\|title=A study of the information content of umkehr observations\|journal=Ph.D. Thesis\|publisher=University of Michigan\|pages=4–6\|url=http://deepblue.lib.umich.edu/bitstream/2027.42/6489/5/bac8981.0001.001.pdf\|accessdate=2009-11-25}}</ref> This effect was first noticed by Götz in 1930. The Umkehr measurement is known as customarily N-value and is given by the logarithm base 10 of the ratio of cloudless zenith sky intensitities at two different wavelengths scaled by a multiplicative factor 100 plus a constant which depends on instruments and extraterrestrial radiation. Methods for deriving vertical distribution from the umkehr measurements were developed by Götz, Dobson and Meetham in 1934,<ref name="Gotz1934">Götz, F. W. P., A. R. Meetham, and G. M. B. Dobson, Proc. Roy. Soc. A 145, 416, 1934.</ref> using the [[Dobson ozone spectrophotometer]] developed by [[Gordon Dobson]]. In 1964 Carlton Mateer provided analysis on information content in umkehr measurements.

			<math>N(\theta) = 100 \log_{10} \frac{I(\lambda',\theta)}{I(\lambda,\theta)} + K</math>

			Considering light which is scattered only once in the atmosphere, the light received by the instrument at surface is contributed by light scattered downward from all the levels in the atmosphere. The amount of light contributed by scattering at any particular level depends on (a) the number of air molecules at that level and (b) the absorption by ozone and scattering by air moleculaes both before and after scattering. As the height increases contribution of effect (a) decreases and contribution of effect (b) increases. For a given zenith angle, the scattered light contribution comes from well defined layer of atmosphere, which can be termed as an effective scattering height. The effective scattering height depends on the ozone absorption coefficient and on the solar zenith angle, increasing as with each of these. The effective scattering height will always be higher for shorter wavelength which is more strongly absorbed. As the sun approaches the horizon, the two intensities decreases, but intensity ''I'' decreasing more rapidly than ''I' ''. However, when the effective scattering height for the short wavelength is above the ozone maximum, ''I'' decreases more slowly then ''I' '', because the ozone absorption occurs mostly in the shorter vertical path after the scattering event, and the ratio ''I/I''' increases until the effective scattering height for ''I' '' is also above the ozone maximum. This reversal (Umkehr) or inversion implies the existence of maximum of ozone concentration at some level in the atmosphere.<ref name=mateer1964 />

			The resulting ozone profile derived from reduction of these measurements is quite dependent on the algorithm used. The most current algorithm is I. Petropavlovskikh and P.K. Bhartia (2004). Current description can be found here: http://www.srrb.noaa.gov/research/umkehr/

			[[File:Example Plot of Umkehr curve..tif\|thumb\|Example of Umkehr curve from a Dobson Ozone Spectrophotometer]]

			==References==
			<references/>

			[[Category:Scattering, absorption and radiative transfer (optics)]]

en>HRoestBot: r2.6.5) (Robot: Adding zh:1997年3月9日日食

2012-08-17T04:32:08Z

r2.6.5) (Robot: Adding zh:1997年3月9日日食

New page

Most men and women would agree that the most effective cooks and chefs are the ones know how to use their kitchen knife. Whether you are a qualified chef or you adore eating scrumptious meals, cutlery knives are nevertheless crucial so they ought to be trustworthy and safe to use. If you have any inquiries with regards to exactly where and how to What R The Best Kitchen Knives use [http://www.thebestkitchenknivesreviews.com/ japanese best kitchen knives], you can speak to us at our own internet site. The cutlery set contains fork, spoon and knife which are meant for providing sophistication to your dinning manners. The list I have given is only a sample of Best Kitchen Prep Knife what you can get to set up your kitchen to feel like a definitely enjoyable place where you can destress from the day and loosen up and make some beautiful meals. Former astronaut and existing Mission to Mars advocate Buzz Aldrin made PayPal Galactic known to the globe. At least four memorials to American World War I casualties have fallen into disrepair or fallen down. Park Slope may be excellent, with dozens of attractions within a few square walkable blocks - from banks to groceries to museums and libraries, a zoo, an Iron Chef and a Superheroes Store. I say three necessary ones and you get that in this set. In no way put a damp knife in the block. The Wusthof Grand Prix II 3-Piece Chef's Knife Set includes an 8-inch chef knife, a 6-inch sandwich knife and a 3-1/2-inch paring knife. Cutlery Roll Knife Set is made by Victorinox and consists of a chef's knife, paring knife, boning knife, bread knife, carving knife with a sharpening steel and incorporates a roll for storing your knifes. This set is produced from stamped high-carbon stainless steel and a great get for the additional qualified cook. Forschner is definitely the ideal knife dollars. I set its temp. Just click on the knife image above and when you get to the Victorinox 40570 web page, scroll down to the testimonials section. The top rated-rated sharpener pictured right here is the one particular I received from my son at Christmas. It is simple to use and operates for my 6" chef's knife... as nicely as my smaller paring knives. Two Knives - An 8-inch chef's knife and a three 1/two-inch paring knife, can tackle just about any cutting activity. Hold the knife firmly in your hand and cut away from the physique. A wide blade permits you to use this knife as a scoop to quickly choose up all the fine pieces. Culinary school chef instructors have praised the Victorinox brand, and price it as a wonderful alternative to the high priced German knives such as the Wusthof. This is why we can claim that high quality is not compromised in this price range priced knife. If you are a chef just starting out, you may well not be capable to purchase a high-end knife set. You may possibly even take into consideration buying a single knife at a time.