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gallato


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MessagePosté le: gallato - Dim 22 Mai - 19:08 (2016) Répondre en citant




Chemistry: A Volatile History (2010) > urlin.us/2cuz1





Iron,..when..combined..with..chromium,..carbon..and..nickel..makes..stainless..steelIt.was.the.Swiss.alchemist.and.surgeon.Paracelsus.who.first.challenged.the.Ancient.Greek.idea.of.four.elementsPeace...&...Regards...They.make.truly.stunning.documentariesIn..October..1775..Priestley..accompanied..Lord..Shelburne..on..a..trip..to..Paris..where..they..were..invited..to..dine..with..the..preeminent..scientists..of..the..timewhat...you...see...when...he...lands...is...the...consequence...of...electric...resistane...Very Happy...it...is...empty,...because...they...did...not...find...anything...else...thereUnfortunately..for..Fermi,..they..quickly..disproved..his..assertion;..one..of..the..elements..produced..was..barium,..which,..with..56..protons,..was..nowhere..near..the..92..protons..the..nucleus..started..with..when..it..was..uraniumWonders...of...the...Universe...Part...II44...viewsTheir..british..accent..(myself..having..a..hybrid..austalian..one..which..i..have..tried..with..all..efforts..to..remove)..is..very..good..the..american..one..is..good..as..well..but..God..do..i..hate..when..they..put..a..dark..overtone..to..sensationalise..it,..it..doesnt..add..anythingQuimbys..This..documentary..is..great..for..the..unscientific..or..uncurious..and..perhaps..a..stimulating..film..for..childrenHe...noticed...that...one...could...often...single...out...three...elements...that...exhibited...similar...properties,...such...as...the...alkali...metals,...which...he...called...triadsThe.book.is.somewhat.dated.now,.but.Asimov.did.an.excellent.job.of.explaining.to.us.laymen.the.history.of.science.in.general.and.how.major.discoveries.in.all.fields.of.science.came.about.(including.Rutherford's.experiments),.without.talking.down.to.the.readerHowever,..the..odds..were..stacked..against..him..little..more..than..half..the..known..elements..had..been..discovered:..he..was..playing..with..an..incomplete..deck..of..cardsWhen.measured,.the.x-rays.always.had.the.same.energy,.unique.to.copperOne..day..he..struck..upon..the..idea..of..making..up..a..pack..of..cards..with..the..elements..names..on..and..began..playing..a..game..he..called..chemical..solitaireWilliam..Creech,..Edinburgh:..(1790)Eventually...Berzelius...had...remarkably...accurate...atomic...weights...for...45...elements;...his...value...for...chlorine...was...accurate...to...within...0.2%...of...the...value...we...know...todayKirchhoff..and..Bunsen..realised..these..spectral..lines..were..unique..to..each..element,..and,..using..this..technique..they..discovered..two..new..elements,..cesium..and..rubidiumRegion...2...DVD...release[edit]Robert...Bunsen...knew...that...when...certain...elements...burned...in...the...flames...of...his...burner...they...each...turned...the...flame...a...different...colourAt...the...beginning...of...the...20th...century...it...was...widely...believed...that...atoms...never...change:...an...atom...of...one...element...stayed...that...way...foreverPaul..Emile..Lecoq..de..Boisbaudran..discovers..Gallium[edit]America...had...just...come...up...with...a...different...solution...to...win...the...atomic...raceSodium,.with.11.electrons.one.in.its.outer-most.occupied.shell,.will.transfer.an.electron.in.the.presence.of.fluorine.to.its.outer-most.occupied.shell,.which.contains.seven.electronsben.Awesome.series,.really.enjoyed.it!.I.have.a.quick.question,.hopefully.someone.can.answer.it.for.meSee..full..summary..Stars:..Brian..Cox,..Steven..Mackintosh..0..Next....Wonders..of..the..Solar..System..(TV..Mini-Series..2010)..Documentary......1..2..3..4..5..6..7..8..9..10..8.8/10..X....In..this..spellbinding..series..Professor..Brian..Cox..visits..the..most..extreme..locations..on..Earth..to..explain..how..the..laws..of..physics..carved..natural..wonders..across..the..solar..systemPierre.Janssen.and.Norman.Lockyer.discover.Helium[edit]Himself.-.Presenter.(3.episodes,.2010).Andrea.Sella.Well...anyways...I'm...32...and...from...Canada,...trying...to...figure...out...how...to...build...a...magnetic...motor,...and...have...watched...anything...to...do...with...Tesla...and...his...work,...you...do...have...some...hereFrom..Hydrogen..to..Uranium..these..elements..had..been..trough..a..revolution..of..rough..course..of..experimentation..by..early..thinkers..and..scientist..who..pioneered..the..steps..towards..breaking..the..ignorance..that..would..make..mankind..truly..an..intelligent..specie,the..kind..that..is..capable..of..knowing..and..manipulating..its..environment..for..the..advancement..of..his..race.We..are..very..lucky..to..have..with..us..the..early..chemist..and..scientist..who..like,..the..genius..Albert..Einstien..whacked..their..brains..and..sacrificed..their..time..for..half..their..lives..to..make..the..shortcut..towards..gaining..the..very..important..tool,"knowledge..of..quantum..physics..and..to..the..macro..elemental..existence..of..the..known..universe."..The..rest..of..mankind..has..to..survive..in..its..race..towards..the..cosmos.The..signs..of..time..is..undoubtedly..apparent,the..earth..is..consumed..by..mankind's..waste,pollutants..and..solid..waste.Therefore..man..has..to..leave..this..planet..and..live..somewhere..in..the..universe.Be..it..early..or..late..mans..journey..to..seed..the..universe..is..soon..to..beginTranslated...from...the...French...by...Robert...Kerr,...Elements...of...Chemistry,...4th...editionHe..started..by..heating..potash..(potassium..carbonate),..with..no..idea..that..his..potash..had..been..contaminated..with..bloodMendeleev...was...sufficiently...confident...in...the...layout...of...his...table...that...he...was...willing...to...leave...gaps...for...unknown...elements...to...make...the...pattern...fit...believing...other...elements...would...later...be...discovered...that...filled...the...gapsIt...was...this...last...air...which...caught...the...attention...of...Joseph...Priestley,...a...Unitarian...minister...whose...favourite...pastime...was...the...investigation...of...airs...specifically,...fixed...air,...given...off...by...the...fermentation...process...in...breweriesHe...tested...for...elements...below...uranium...in...the...periodic...table:...radon,...actinium,...polonium,...as...far...back...as...lead...it...was...none...of...theseIn.1863.John.Newlands.noticed.that.when.ordered.by.weight,.every.eighth.element.seemed.to.share.similar.properties,.such.as.carbon.and.silicon.in.the.sequence:.carbon,.nitrogen,.oxygen,.fluorine,.sodium,.magnesium.and.silicon cf903a7309
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