Share
VIDEOS 1 TO 50
Lithium chemistry #02 - Burning Lithium
Lithium chemistry #02 - Burning Lithium
Published: 2009/07/07
Channel: PeriodicElements
Slow Motion Lithium Combustion
Slow Motion Lithium Combustion
Published: 2009/12/24
Channel: Nick Moore
Lithium Battery Causing Extreme Fumes When Cut
Lithium Battery Causing Extreme Fumes When Cut
Published: 2014/12/29
Channel: Burn Hard Zen
Burning lithium battery🤤😱 - How dangerous it is?!!
Burning lithium battery🤤😱 - How dangerous it is?!!
Published: 2017/01/26
Channel: Mr. Thinker
Burning lithium
Burning lithium
Published: 2010/03/23
Channel: Pyroxylin
Lithium Metal Experiment FAIL!!!
Lithium Metal Experiment FAIL!!!
Published: 2012/10/20
Channel: CrazyRussianHacker
Lithium - The Lightest Metal on Earth
Lithium - The Lightest Metal on Earth
Published: 2016/08/18
Channel: Thoisoi2 - Chemical Experiments!
Burning Lithium Battery
Burning Lithium Battery
Published: 2017/04/13
Channel: Christian Gingras
Exploding Laptop - Lithium Ion Battery  (Extended Version)
Exploding Laptop - Lithium Ion Battery (Extended Version)
Published: 2013/07/24
Channel: PC Pitstop Video
Lithium-ion Car Battery Fire Testing
Lithium-ion Car Battery Fire Testing
Published: 2016/08/15
Channel: Hazard Control Technologies
Lithium Battery vs. Water
Lithium Battery vs. Water
Published: 2013/04/24
Channel: TiEx
Reaction of Lithium and Oxygen
Reaction of Lithium and Oxygen
Published: 2011/12/08
Channel: NCSSMDistanceEd
How to Get Lithium Metal From an Energizer Battery, Lithium Experiment, Burning Lithium
How to Get Lithium Metal From an Energizer Battery, Lithium Experiment, Burning Lithium
Published: 2017/09/16
Channel: The Last Viking
Lithium Ion battery burns
Lithium Ion battery burns
Published: 2014/08/16
Channel: Greg Pollard
Burning lithium metal
Burning lithium metal
Published: 2010/05/18
Channel: Diazodinitrophenol
Lithium burning
Lithium burning
Published: 2012/02/20
Channel: Pyromaster1
LITHIUM BURNING FLAME
LITHIUM BURNING FLAME
Published: 2010/03/06
Channel: PubliosValesios
Burning Lithium Chloride Amazing Red Flame
Burning Lithium Chloride Amazing Red Flame
Published: 2015/04/17
Channel: kcin556
Lithium in Water - Violent Alkaline Reactions and Burning Hydrogen
Lithium in Water - Violent Alkaline Reactions and Burning Hydrogen
Published: 2010/07/02
Channel: highvoltagefeathers
Lithium Burning On Stroboscopic Turn Table
Lithium Burning On Stroboscopic Turn Table
Published: 2017/05/06
Channel: Christian Gingras
Ellwood City lithium fire causes explosions, fire still burning
Ellwood City lithium fire causes explosions, fire still burning
Published: 2015/11/08
Channel: WKBN27
Burning Lithium from a flat Energiser battery.©
Burning Lithium from a flat Energiser battery.©
Published: 2010/04/28
Channel: Green Silver
Lithium Metal Burning Underwater
Lithium Metal Burning Underwater
Published: 2009/09/03
Channel: neddy17
lithium burning
lithium burning
Published: 2012/06/10
Channel: Jonathan Doucette
Reaction of Lithium and Water
Reaction of Lithium and Water
Published: 2011/12/08
Channel: NCSSMDistanceEd
Lithium burning
Lithium burning
Published: 2015/04/22
Channel: Armando Martinez
Exploding Batteries in Slow Motion - The Slow Mo Guys
Exploding Batteries in Slow Motion - The Slow Mo Guys
Published: 2017/02/23
Channel: The Slow Mo Guys
Lithium in water
Lithium in water
Published: 2011/05/23
Channel: nickbhalo
Burning LITHIUM metal on a Bonfire!
Burning LITHIUM metal on a Bonfire!
Published: 2016/04/16
Channel: Rich And Ben Do Science
Lithium Burning
Lithium Burning
Published: 2011/04/27
Channel: Gustav Cappaert
Burning lithium metal in pure oxygen!
Burning lithium metal in pure oxygen!
Published: 2016/01/27
Channel: SciencePosts
Lithium battery in iceblock burns out
Lithium battery in iceblock burns out
Published: 2011/08/31
Channel: RODALCO2007
Burning Lithium metal
Burning Lithium metal
Published: 2017/04/27
Channel: dylan Missuwe
Watch the EXPLOSIVE moment a phone battery is stabbed with a kitchen knife
Watch the EXPLOSIVE moment a phone battery is stabbed with a kitchen knife
Published: 2015/03/16
Channel: NewsD2
Burning Lithium Battery Coin Sized-Exploding Battery
Burning Lithium Battery Coin Sized-Exploding Battery
Published: 2014/01/19
Channel: GEORGE ZARIFIS
Xtreme Cleaners Lithium Burn off
Xtreme Cleaners Lithium Burn off
Published: 2013/04/17
Channel: Lawrence Douglas
Burning lithium, sodium and potassium in chlorine gas
Burning lithium, sodium and potassium in chlorine gas
Published: 2016/06/22
Channel: Nigel Baldwin
Burning Lithium Metal (Explodes and gives off a bright light)
Burning Lithium Metal (Explodes and gives off a bright light)
Published: 2013/11/15
Channel: Ariel Froimchuk
Burning lithium, sodium and potassium in chlorine gas - experiment 3
Burning lithium, sodium and potassium in chlorine gas - experiment 3
Published: 2016/06/24
Channel: Nigel Baldwin
Burning Lithium in Water Close Up
Burning Lithium in Water Close Up
Published: 2016/01/04
Channel: EH Productions Videos
Lithium - A more violent reaction
Lithium - A more violent reaction
Published: 2012/10/29
Channel: DanTheAppleMan
Burning lithium
Burning lithium
Published: 2012/09/13
Channel: Ellis Made Something
Burning Lithium from battery
Burning Lithium from battery
Published: 2009/10/21
Channel: guyorgay
Lithium and Oxygen
Lithium and Oxygen
Published: 2015/12/17
Channel: DingusLabs
Burning Lithium Salt
Burning Lithium Salt
Published: 2015/10/04
Channel: Shalina Bulchandani
Thí nghiệm đốt pin điện thoại và cái kết || Burning the Lithium Cell
Thí nghiệm đốt pin điện thoại và cái kết || Burning the Lithium Cell
Published: 2017/07/18
Channel: Bui Quang Hung
On the burning of Lithium tablets
On the burning of Lithium tablets
Published: 2016/09/01
Channel: Leena Ummikko
Burning lithium metal
Burning lithium metal
Published: 2011/12/23
Channel: futurechemist21
Electric Danger of Lithium Ion 18650 - Battery Fires Exposed - Possible DIY Solution
Electric Danger of Lithium Ion 18650 - Battery Fires Exposed - Possible DIY Solution
Published: 2014/03/26
Channel: Andrew Jones
Burning lithium metal in Hydrogen chloride gas
Burning lithium metal in Hydrogen chloride gas
Published: 2016/01/28
Channel: SciencePosts
NEXT
GO TO RESULTS [51 .. 100]

WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Lithium burning is a nucleosynthetic process in which lithium is depleted in a star. Lithium is generally present in brown dwarfs and not in low-mass stars. Stars, which by definition must achieve the high temperature (2.5 × 106 K) necessary for fusing hydrogen, rapidly deplete their lithium. This occurs by a collision of lithium-7 and a proton producing two helium-4 nuclei. The temperature necessary for this reaction is just below the temperature necessary for hydrogen fusion. Convection in low-mass stars ensures that lithium in the whole volume of the star is depleted. Therefore, the presence of the lithium line in a candidate brown dwarf's spectrum is a strong indicator that it is indeed substellar.

From a study of lithium abundances in 53 T Tauri stars, it has been found that lithium depletion varies strongly with size, suggesting that lithium burning by the P-P chain, during the last highly convective and unstable stages during the pre–main sequence later phase of the Hayashi contraction may be one of the main sources of energy for T Tauri stars. Rapid rotation tends to improve mixing and increase the transport of lithium into deeper layers where it is destroyed. T Tauri stars generally increase their rotation rates as they age, through contraction and spin-up, as they conserve angular momentum. This causes an increased rate of lithium loss with age. Lithium burning will also increase with higher temperatures and mass, and will last for at most a little over 100 million years.

The P-P chain for lithium burning is as follows


p
 
6
3
Li
 
→  7
4
Be
  (unstable)
7
4
Be
 

e
 
→  7
3
Li
 

ν

p
 
7
3
Li
 
→  8
4
Be
 
  (unstable)
    8
4
Be
 
→  4
2
He
 
+ energy

It will not occur in stars less than sixty times the mass of Jupiter. In this way, the rate of lithium depletion can be used to calculate the age of the star.

The use of lithium to distinguish candidate brown dwarfs from low-mass stars is commonly referred to as the lithium test. Heavier stars like Sun can retain lithium in their outer atmospheres, which never get hot enough for lithium depletion, but those are distinguishable from brown dwarfs by their size. Brown dwarfs at the high end of their mass range (60–75 MJ) can be hot enough to deplete their lithium when they are young. Dwarfs of mass greater than 65 MJ can burn off their lithium by the time they are half a billion years old, thus this test is not perfect.[1]

References[edit]

  1. ^ Basri, G. (1998). Rafael Rebolo; Eduardo L. Martin; Maria Rosa Zapatero Osorio, eds. The Lithium Test for Young Brown Dwarfs (invited review). Proceedings of a Workshop held in Puerto de la Cruz, Tenerife, Spain, 17–21 March 1997, ASP Conference Series #134. p. 394. Bibcode:1998ASPC..134..394B. 

Disclaimer

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.

Powered by YouTube
Wikipedia content is licensed under the GFDL and (CC) license