Antiproton: Difference between revisions

From formulasearchengine
Jump to navigation Jump to search
en>Hmains
m copyedit, refine cat, and AWB general fixes using AWB
en>Trappist the monk
Line 1: Line 1:
{{Infobox scientist
Do we recognize where we stand when it comes to a weight? Are you overweight, fat, or even underweight? I've watched a great deal of questions regarding this certain topic plus hopefully this will enable explain elements.<br><br>The BMI of a person is calculated by dividing his/her weight (pounds) by the square of his/her height (inches) plus multiplying with 703. This index indicates if a individual is underweight, normal, obese or fat. After is a standard [http://safedietplans.com/bmi-chart bmi chart] for adults.<br><br>35.Qualifying for Boston/The Boston Times: Boston is a terrific, tough race. It is an honor to run it. This really is bmi chart men not one to be missed should you qualify. See some of our posts regarding the Boston Marathon. Check out the Boston Marathon Qualifying Times.<br><br>Another benefit of green leafy greens is the fact that they supply phytonutrients, which are nutrients important for sustaining human health by preventing mobile damage, preventing cancer cell replication plus lowering cholesterol levels. They also are a source of vitamins C, E, E and most B vitamins. Dark green leafy greens contain little amounts of omega-3 fats.<br><br>It is fairly rare for kids to be obese due to health problems. The opposite is true. Children have wellness problems considering they are overweight. Unless diagnosed by a doctor, health issues ought not to be employed by parents because an reason. Similarly with genetics. Although genetics will play a piece, it really is only a very little part. Fat parents frequently have fat youngsters, however this is not commonly genetic. How about the truth that children mimic the bad eating practices and activity behavior of their parents? How often have we watched parents plus kids living off Big Macs and other fatty ease foods.<br><br>Example 1: A healthy, normally-proportioned 5-foot-tall person bmi chart women weighs 100 pounds. What would we expect a 6-foot-tall individual to weigh according to BMI?<br><br>It is essential which whilst working out the BMI, the body frame and build also be taken into consideration. So, the BMI by itself can not be exact for a weight trainer, a expecting female, or an athlete. People that are over 60 years of age cannot calculate their BMI by this tool because their bones commence to weigh less due to aged age.<br><br>Unfortunately far too several kids have considerably more body fat then which, plus you, as adults and their parents, are failing them. They will likely not thank you inside years to come for failing them inside this means. Dont blame the overweight child. Blame the parent, if there is any blame. Some is due to genetics or illness, yet just a relatively quite small amount.
| name              = Thomas Johann Seebeck
| image            = ThomasSeebeck.jpg|thumb|225px
| image_size      =
| caption          =
| birth_date        = {{birth-date|9 April 1770|9 April 1770}}
| birth_place      = [[Reval]]
| death_date = {{death-date|10 December 1831|10 December 1831}}
| death_place      = Berlin<ref>{{cite book | title = A Scientific German Reader | author = George Theodore Dippold | publisher = Ginn & Co. | year = 1904 | url = http://books.google.com/books?id=_2kBAAAAYAAJ&pg=PA216&dq=%22Thomas+Johann+Seebeck%22#PPA212,M1 }}</ref>
| residence        =
| citizenship      =
| nationality      =
| ethnicity        = [[Baltic German]]
| field            = [[Physics]]
| work_institutions =
| alma_mater        =
| doctoral_advisor  =
| doctoral_students =
| known_for        = Discovering the [[thermoelectric effect]]
| author_abbrev_bot =
| author_abbrev_zoo =
| prizes            =
| religion          =
| footnotes        =
}}
'''Thomas Johann Seebeck''' (pronounced {{IPA-de|ˈtoːmas ˈjoːhan ˈzeːbɛk|}}; 9 April 1770 &ndash; 10 December 1831) was a [[physics|physicist]] who in 1821 discovered the [[thermoelectric effect]].
 
Seebeck was born in Reval (today [[Tallinn]], [[Estonia]]) to a wealthy [[Baltic Germans|Baltic German]] merchant family. He received a medical degree in 1802 from the [[University of Göttingen]], but preferred to study physics. In 1821 he discovered the thermoelectric effect, where a junction of dissimilar metals produces an electric current when exposed to a temperature gradient. This is now called the Peltier–Seebeck effect and is the basis of [[thermocouple]]s and [[thermopile]]s.
 
==Seebeck effect==
 
[[File:Thomas Johann Seebeck.jpg|thumb|upright|A plaque in honor of Seebeck in Tallinn, Estonia]]
 
In 1821 Thomas Johann Seebeck found that a circuit made from two dissimilar [[metal]]s, with junctions at different temperatures would deflect a compass [[magnet]]. Seebeck initially believed this was due to [[magnetism]] induced by the temperature difference. However, it was quickly realized that it was an electrical current that is induced, which by [[Ampere's law]] deflects the magnet. More specifically, the temperature difference, produces an electric potential ([[voltage]]) which can drive an electric current in a closed circuit. Today, this effect is known as the Peltier–Seebeck effect.
 
The voltage produced is proportional to the temperature difference between the two junctions. The proportionality constant (a) is known as the [[Seebeck coefficient]], and often referred to as the thermoelectric power or thermopower. The Seebeck voltage does not depend on the distribution of temperature along the metals between the junctions. This effect is the physical basis for a thermocouple, which is used often for temperature measurement.
 
<math>V = a(T_h - T_c)\,\!</math>
 
The voltage difference, ''V'', produced across the terminals of an open circuit made from a pair of dissimilar metals, A and B, whose two junctions are held at different temperatures, is directly proportional to the difference between the hot and cold junction temperatures, ''T''<sub>h</sub> − ''T''<sub>c</sub>.
The voltage or current produced across the junctions of two different metals is caused due to the diffusion of electrons from high electron density region to low electron density region as the density of electrons is different in different metals. Due to this the current flows in opposite direction.
If both the junctions are kept at same temperature,equal amount of electron diffuses at both the junctions. Therefore the current at both the junctions are equal and opposite and the net current is zero, and if both the junctions are kept at different temperature then diffusion at both the junctions are different and hence different amount of current is produced. Therefore the net current is not zero. This is known as the phenomena of thermoelectricity.
 
==Precursors to color photography==
 
In 1810, at [[Jena]], Seebeck described the action of the spectrum of light on the chloride of silver.  He observed that the exposed chemical would sometimes take on a pale version of the color of light that exposed it, and also reported the action of light for a considerable distance beyond the violet end of the spectrum.<ref>{{cite book | title = The Encyclopædia Britannica: A Dictionary of Arts, Sciences, Literature and General Information | author = Hugh Chisholm, editor | year = 1911 | edition = Eleventh ed. | volume = XXI | pages = 485 | url = http://books.google.com/books?id=hGgEAAAAYAAJ&pg=PA485&dq=%22Thomas+Johann+Seebeck%22}}</ref> Seebeck also worked on the ''[[Theory of Colours]]'' with [[Johann Wolfgang von Goethe|Goethe]].
 
==Other achievements==
In 1808, Seebeck was first to produce and describe the [[amalgam (chemistry)|amalgam]] of potassium. In 1810, he observed the magnetic properties of nickel and cobalt. In 1818, Seebeck discovered the [[optical activity]] of the solutions of sugar.
 
==See also==
* [[List_of_Baltic_Germans#Scientists|List of Baltic German scientists]]
 
==References==
{{Reflist}}
 
==Further reading==
* {{DSB
|first= Eugene
|last= Frankel
|title= Seebeck, Thomas
|volume= 12
|pages= 281-282
}}
* Magie, W.M. (1963). ''A Source Book in Physics.'' Harvard: Cambridge MA. pp.&nbsp;461–464. Partial translation of Seebeck's "Magnetische Polarisation der Metalle und Erze durch Temperatur-Differenz."
 
==External links==
*[http://www.dea.icai.upco.es/romano/sp4/tpares_all.pdf A Biography of Seebeck, includes references]
 
{{Authority control|VIAF=54931229}}
 
{{Persondata <!-- Metadata: see [[Wikipedia:Persondata]]. -->
| NAME              = Seebeck, Thomas Johann
| ALTERNATIVE NAMES =
| SHORT DESCRIPTION = German physcist
| DATE OF BIRTH    = 9 April 1770
| PLACE OF BIRTH    = [[Reval]]
| DATE OF DEATH    = 10 December 1831
| PLACE OF DEATH    = Berlin
}}
{{DEFAULTSORT:Seebeck, Thomas Johann}}
[[Category:1770 births]]
[[Category:1831 deaths]]
[[Category:German physicists]]
[[Category:Estonian physicists]]
[[Category:Baltic-German people]]
[[Category:Members of the Prussian Academy of Sciences]]
[[Category:People from Tallinn]]
[[Category:People from the Governorate of Estonia]]
[[Category:University of Göttingen alumni]]
[[Category:19th-century physicists]]

Revision as of 00:03, 1 March 2014

Do we recognize where we stand when it comes to a weight? Are you overweight, fat, or even underweight? I've watched a great deal of questions regarding this certain topic plus hopefully this will enable explain elements.

The BMI of a person is calculated by dividing his/her weight (pounds) by the square of his/her height (inches) plus multiplying with 703. This index indicates if a individual is underweight, normal, obese or fat. After is a standard bmi chart for adults.

35.Qualifying for Boston/The Boston Times: Boston is a terrific, tough race. It is an honor to run it. This really is bmi chart men not one to be missed should you qualify. See some of our posts regarding the Boston Marathon. Check out the Boston Marathon Qualifying Times.

Another benefit of green leafy greens is the fact that they supply phytonutrients, which are nutrients important for sustaining human health by preventing mobile damage, preventing cancer cell replication plus lowering cholesterol levels. They also are a source of vitamins C, E, E and most B vitamins. Dark green leafy greens contain little amounts of omega-3 fats.

It is fairly rare for kids to be obese due to health problems. The opposite is true. Children have wellness problems considering they are overweight. Unless diagnosed by a doctor, health issues ought not to be employed by parents because an reason. Similarly with genetics. Although genetics will play a piece, it really is only a very little part. Fat parents frequently have fat youngsters, however this is not commonly genetic. How about the truth that children mimic the bad eating practices and activity behavior of their parents? How often have we watched parents plus kids living off Big Macs and other fatty ease foods.

Example 1: A healthy, normally-proportioned 5-foot-tall person bmi chart women weighs 100 pounds. What would we expect a 6-foot-tall individual to weigh according to BMI?

It is essential which whilst working out the BMI, the body frame and build also be taken into consideration. So, the BMI by itself can not be exact for a weight trainer, a expecting female, or an athlete. People that are over 60 years of age cannot calculate their BMI by this tool because their bones commence to weigh less due to aged age.

Unfortunately far too several kids have considerably more body fat then which, plus you, as adults and their parents, are failing them. They will likely not thank you inside years to come for failing them inside this means. Dont blame the overweight child. Blame the parent, if there is any blame. Some is due to genetics or illness, yet just a relatively quite small amount.