Cost of carry: Difference between revisions

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The formula is being expressed as a continuous forward value, therefore the s variable should be in the power of e (not added to the Spot price as if for discrete values). An alternative wiki page explains it here: http://en.wikipedia.org/wiki/Forward_con
 
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[[Image:Teltron-Electron-Beam-Tube.jpg|thumb|right|275px|Teltron electron beam tube]]
== that the inventory list you have ==
[[Image:Teltron-Diffraction-Tube-with-Helmholtz-Coils-and-Stand.jpg|thumb|right|275px|Teltron diffraction tube with [[Helmholtz coils]] and stand]]
A '''teltron tube''' (named for Teltron Inc., which is now owned by 3B Scientific Ltd.) is a type of [[cathode ray tube]] used to demonstrate the properties of [[electrons]].  It usually contains two [[electron gun]]s, which can project two thin electron beams at right angles.  The beams can be bent by applying voltages to various electrodes in the tube.  The electron beams are visible as fine bluish lines.  This is accomplished by filling the tube with low pressure [[helium]] (He) or [[Hydrogen]] (H<sub>2</sub>) gas.  A few of the electrons in the beam collide with the helium atoms, causing them to [[fluoresce]] and emit light.


They are usually used to teach electromagnetic effects because they show how an electron beam is affected by [[electric field]]s and by [[magnetic field]]s like the [[Lorentz force]].
Could not help but ask.<br><br>'We have a total over 1,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_22.htm オークリー サングラス カタログ],120,000 Thunder Stone.' Feng Luo to see the flood,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_33.htm オークリー 激安 サングラス], Thor, 'Brother,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_16.htm オークリー サングラス 調光], brother,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_48.htm オークリー サングラス 手入れ], that the inventory list you have,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_0.htm オークリー サングラス 店舗], what are you going to change?'<br><br>'D6-class rail guns!' Raytheon some expectations, 'that's D6 level railgun,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_2.htm ロードバイク サングラス オークリー], on behalf of the domain master six strong bands which are difficult to block the shot! Such restricted weapon ...... or D6 level is absolutely price. leave this land, no this shop. '<br><br>'ah,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_42.htm オークリー サングラス レーダー].' Luo Feng nor by the nod.<br><br>D6-class rail guns!<br><br>hide, much to the domain master to a strong artillery, bombers kill directly. This restricted the main weapon ...... many circles are not. Not the money to buy, but not channels. Or on the main sector concerned,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_28.htm オークリー サングラス オークション], is not worth buying.<br><br>'# 11 'stars of the heart'.' Hung eyes shine, 'which stars of the heart, and you know that.'<br><br>'ah.'<br><br>Luo Feng some heart.
相关的主题文章：
<ul>
 
  <li>[http://0752114.com/home.php?mod=space&uid=473071 http://0752114.com/home.php?mod=space&uid=473071]</li>
 
  <li>[http://www.arichat.com/cgi-bin/gbks/guestbook.cgi http://www.arichat.com/cgi-bin/gbks/guestbook.cgi]</li>
 
  <li>[http://www.17ws8.com/bbs/home.php?mod=space&uid=255862 http://www.17ws8.com/bbs/home.php?mod=space&uid=255862]</li>
 
</ul>


==Motions in fields==
== the general miserable.' ==
Charged particles in a uniform electric field follow a [[parabolic trajectory]], since the [[electric field]] term (of the [[Lorentz force]] which acts on the particle) is the product of the particle's charge and the magnitude of the electric field, (oriented in the direction of the electric field). In a uniform magnetic field however, charged particles follow a circular trajectory due to the [[cross product]] in the [[magnetic field]] term of the Lorentz force. (That is, the force from the magnetic field acts on the particle in a direction perpendicular to the particle's direction of motion. See: [[Lorentz force]] for more details.)


==The Apparatus==
'Yes ah, it is estimated generals secretly they want to play,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_4.htm ランニング サングラス オークリー], so do not tell us.' Eight senior army says are connected.<br><br>'bastard!'<br><br>Shifeng Xiong gas fire fly, 'heralds go, once found generals, called him immediately rolled my go!'<br><br>'Yes!'<br><br>eight senior army respectful crashed,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_73.htm オークリー サングラス 度付き 価格], then Shifeng Xiong direct flash stature disappear. At this time eight personnel relieved,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_34.htm オークリーのサングラス], tick spit all talk together: 'how is it,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_70.htm 偏光サングラス オークリー], the generals often go naughty,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_34.htm オークリー 人気サングラス], have not seen the last of Santo so angry, it Bucai disappeared two or three days in the past disappeared days half are common. '<br><br>'I do not know, but evidently,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_67.htm ゴルフ オークリー サングラス], Santo angry,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_61.htm オークリー ゴルフ サングラス], the general miserable.'<br><br>......<br><br>general is miserable,[http://www.alleganycountyfair.org/_vti_cnf/rakuten_oakley_5.htm オークリー サングラス 野球], because the generals had died.<br><br>......<br><br>late at night.<br><br>Jing Luo Feng stood in their living room pavilion, put on a black suit and wearing boots, and
The 'teltron' apparatus consists of a Teltron type electron deflection tube, a Teltron stand, [[High voltage|EHT]] power supply ({{nowrap|0 - 5000 V DC}}, variable).
相关的主题文章：
 
<ul>
==Experimental setup==
 
[[Image:Fadenstrahlrohr Versuchsaufbau.svg|thumb|220px|Experimental sketch fine beam]]
  <li>[http://myvolt.ca/item/create_form/1 http://myvolt.ca/item/create_form/1]</li>
In an evacuated glass bulb some [[hydrogen]] gas (H<sub>2</sub>) is filled, so that the tube has a hydrogen atmosphere at low pressure of about {{nowrap|1 [[Pascal (unit)|Pa]]}} is formed. The pressure is such that the electrons are decelerated by collisions as little as possible (change in kinetic energy), the number of collisions are few but sufficient to emit visible light. Inside the bulb there is an [[electron gun]]. This consists of a heating spiral, a cathode and an anode hole. From the [[cathode]] ('''-''') electrons are emitted and accelerated by the electric field towards the positively charged anode ('''+'''). Through a hole in the anode, the electrons leave the beam forming system and the [[Wehnelt cylinder]] bundles.
 
 
  <li>[http://www.europeanwindstorms.org/cgi-bin/storms/storms.cgi http://www.europeanwindstorms.org/cgi-bin/storms/storms.cgi]</li>
==Results==
 
[[Image:Cyclotron motion wider view.jpg|thumb|Another experimental setup showing the electron beam orbit]]
  <li>[http://www.exunderwear.com/plus/feedback.php?aid=3154 http://www.exunderwear.com/plus/feedback.php?aid=3154]</li>
When the heater is energized, the heating coil will cause electrons to emerge from it due [[thermionic emission]]<!--alt therm..-->. In the [[electric field]] between anode and cathode, the electric field acts on the electrons, which accelerates to a high velocity, such that the electrons leave through a small opening in the anode as an electron beam. Only when the coil current is turned on, a force will act on the beam and change its direction<!--alt not-not-->. Otherwise it will retain its position<!--point out-->. If, however, the [[Coil#Electromagnetic coils|coil]] current is switched on, the [[Lorentz force]] will direct the electrons into a circular orbit.
 
 
</ul>
==Determination of the specific electron charge==
[[Image:Fadenstrahlrohr-Versuch.png|thumb|500px|Derivation of the formula to determine the specific charge of the electron with the help of the filament<!--xx--> beam-test]]
The higher the coil current, the stronger magnetic field and thus smaller radius of the circular path of the electrons. The strength of the magnetic field and the [[Lorentz force]] are proportional to each other, such that when the Lorentz force increases. A larger Lorentz force will deflect the electrons more strongly, so the orbit will be smaller. The Lorentz force <math>F_L</math> is always perpendicular to the instantaneous direction of movement and allow a centripetal <math>F_Z</math> circular motion. The magnitude of the velocity and hence the kinetic energy can not change them:
 
:<math>\begin{align} F_L &= F_Z\\
e\cdot v\cdot B &= m\cdot\frac{v^2}{r}
\end{align}</math>
 
From this we get the amount of specific electron charge
 
:<math>\frac{e}{m} = \frac{v}{B\cdot r}</math>
 
The determination of the velocity is performed using the [[Conservation of energy|energy conservation law]]
 
:<math>e\cdot U = \frac{1}{2}\cdot m\cdot v^2</math>
 
This is finally followed by
 
:<math>\frac{e}{m} = \frac{2 \, U}{r^2\cdot B^2}</math>
 
The specific electron charge has the value
 
:<math>\frac{-e}{m} \approx -1{.}7588202 \cdot 10^{11} \, \mathrm{\frac{C}{kg}}</math>
 
Since the [[Elementary charge|charge of an electron]] is available from the [[Oil drop experiment|Millikan experiment]], the study of electrons in an magnetic field is the determination of its [[mass]] in accordance with:
 
:<math>\ m = \frac{e \cdot r^2 \cdot B^2}{2 \, U} \approx 9{.}1094 \cdot 10^{-31} \, \mathrm{kg} </math>
 
Similar concepts for the weighing of charged particles can be found in the [[Mass spectrometry|mass spectrometer]].
 
==External links==
* [http://lpc1.clpccd.cc.ca.us/lpc/physics/pdf/phys2/eoverm.pdf http://lpc1.clpccd.cc.ca.us/lpc/physics/pdf/phys2/eoverm.pdf]
* [http://www.fbise.edu.pk/curr/hsscsyll/Physics.doc http://www.fbise.edu.pk/curr/hsscsyll/Physics.doc]
* [http://www.practicalphysics.org/go/Guidance_136.html?topic_id=$parameters.topic_id&collection_id=%24parameters.collection_id Practical Physics - Types of Electron Tube]
* [http://www.leifiphysik.de/web_ph10/versuche/10_fadenstrahl/versuch/fadenstrahl.htm Fadenstrahlrohr] ([[LEIFI]]-Physik)
 
[[Category:Gas discharge lamps]]
[[Category:Vacuum tube displays]]

Latest revision as of 23:00, 2 November 2014

that the inventory list you have

Could not help but ask.

'We have a total over 1,オークリー サングラス カタログ,120,000 Thunder Stone.' Feng Luo to see the flood,オークリー 激安 サングラス, Thor, 'Brother,オークリー サングラス 調光, brother,オークリー サングラス 手入れ, that the inventory list you have,オークリー サングラス 店舗, what are you going to change?'

'D6-class rail guns!' Raytheon some expectations, 'that's D6 level railgun,ロードバイク サングラス オークリー, on behalf of the domain master six strong bands which are difficult to block the shot! Such restricted weapon ...... or D6 level is absolutely price. leave this land, no this shop. '

'ah,オークリー サングラス レーダー.' Luo Feng nor by the nod.

D6-class rail guns!

hide, much to the domain master to a strong artillery, bombers kill directly. This restricted the main weapon ...... many circles are not. Not the money to buy, but not channels. Or on the main sector concerned,オークリー サングラス オークション, is not worth buying.

'# 11 'stars of the heart'.' Hung eyes shine, 'which stars of the heart, and you know that.'

'ah.'

Luo Feng some heart. 相关的主题文章：

the general miserable.'

'Yes ah, it is estimated generals secretly they want to play,ランニング サングラス オークリー, so do not tell us.' Eight senior army says are connected.

'bastard!'

Shifeng Xiong gas fire fly, 'heralds go, once found generals, called him immediately rolled my go!'

'Yes!'

eight senior army respectful crashed,オークリー サングラス 度付き 価格, then Shifeng Xiong direct flash stature disappear. At this time eight personnel relieved,オークリーのサングラス, tick spit all talk together: 'how is it,偏光サングラス オークリー, the generals often go naughty,オークリー 人気サングラス, have not seen the last of Santo so angry, it Bucai disappeared two or three days in the past disappeared days half are common. '

'I do not know, but evidently,ゴルフ オークリー サングラス, Santo angry,オークリー ゴルフ サングラス, the general miserable.'

......

general is miserable,オークリー サングラス 野球, because the generals had died.

......

late at night.

Jing Luo Feng stood in their living room pavilion, put on a black suit and wearing boots, and 相关的主题文章：

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