SoAfrica, as a continenthasobviouslynotbeenthemostfortunateofallthe 54 countriesthatexistheretoday, noneweredealt a favorablehandfromeither a historicalor a geographicperspectiveafterbeingconqueredbyEuropeans, havingtheirbordersallarbitrarilydrawnupandthenoccupiedforgenerations.
Thereis a starkcontrastbetweenthearabstatesofNorthAfricawhereaccesstoelectricityisnearlyuniversalandthedozensofcountriesbeneaththeminsubSaharanAfrica, whereelectricityissignificantlymorespotty.
Allowmetoexplainthebritishshowedupinthe 19thcenturyandbasicallycarvedout a colonywithGhana's roughmodernboundariesthattheycalledatthetimetheGoldCoastbecausetheywereprimarilyinterestedinusingitas a tradingpostforgold.
Cominginfromthewestafricaninteriornaturallyaswithallafricancolonies, thebritishcreatedtheseartificialbordersacross a multitudeofpeoplewith a multitudeoflanguages, religiousfaithsandethnicidentities.
Then, aftermorethan a centuryofbritishcolonialruleinwhatbecameknownasGhanaeventuallyachievedindependencein 1957 andwasledbythisman, KwameNkrumahwhosetoutaschiefgoalsaspresidentasabolishingGhanianpoverty, ignoranceanddiseaseanddespitethevariousdisadvantagesandnervesthatGhanahadimmediatelyuponindependenceaftercenturiesofcolonialism, theydidhave a fewadvantagesthatmanyothersubSaharanafricancountriesdidnot.
Firstofall, theyhad a nicelongcoastlinethatcouldprovidedirectaccesstothegulfofguineaandtheworldocean, enablingthemfreeaccesstoconductinternationalmaritimetrade.
SecondGhanaisrichin a widevarietyofnaturalresourcesbutwasspecificallyblessedbyanabundanceofboxsite, a sedimentaryrockthatcontains a relativelyhighamountofaluminumandas a resultistheworld's primarysourceofaluminum, oneoftheworld's mostimportantmetalsusedinnearlyeverythingfromaircrafttoautomobiles, tocars, computersanddozensofotherthings.
Buttheproblemwastherefiningboxsiteinto a workablealuminumis a veryenergyintensiveprocessandGhanalackedtheelectricityinfrastructurethatwasrequiredtopower a smelterthatcouldturnbauxiteintoaluminumat a trulyindustrialscale.
A schemebeganbeingworkedoutfortheconstructionof a hydroelectricdam.
ButtheVoltaRiverishugeandsoinordertoactuallydammitthedamitselfwasgoingtohavetobeenormousandthatmeantthatitwasgoingtocost a lotofmoney.
Andas a freshlyindependentformercolonialcountry, Ghanawasprettyshortoncashandsowithanestimatedpricetagof $258 millionin 19 sixtiesmoney, GhanamanagedtosecureinvestmentsfromtheWorldBank, theUnitedStatesintheUnitedKingdomtogettheprojectrollingoffthegroundandthenfromthere, theplanwasrelativelystraightforwardbythetownofAkosomboontheriver's banks, A massiveconcretedam 660 m longand 114 m highwouldbebuilttoholdbackthewatersoftheVoltaforcontext.
Thatismorethanthreetimesaswideasthehooverdaminthe U.
Now, inorderforallofthistowork, theyneededtoflood a portionoftheVoltariverbasinbehindthedaminordertocreate a bigreservoirofwaterthattheycouldusetofloodthroughthedamtogeneratetheelectricity.
ThereservoirtheyendedupcreatingherebecameLakeVolta, thelargestmanmadelakeinhistory, with a surfaceareaofjustover 8500 squarekilometers, whichequatedtoabout 3.6% oftheentireterritoryofGhanagoingunderwater.
Forthesakeofcomparison, thelakeisabouttwicethesizeofthe U.
S.
StateofRhodeisland.
Andwe'rethelower 48 USStates.
Tomake a similarsacrificeof 3.6% oftheirtotalland, itwouldbelikeplungingtheentiretyofNevadabeneath a seaofwater.
afterthedamwasfinishedinthelandsacrificed.
Andnowprovides 1000 and 38 megawattsofelectricpower, whichisnotonlyenoughtopowerGhana's entirealuminumindustry, butalmostallofGhana's entiredomesticelectricitydemandaswell.
ThedamproducessomuchpowerforGhanathattheynowexport a lotoftheenergyintoneighboringcountriestolikeTogoandBenin, whothemselvesnowreceivedthemajorityoftheirownelectricityneedsfromtheVoltaDaminGhanaaswell.
Thereunfortunatelyisn't ever a freelunchespeciallyforformercolonial e occupiedcountriesandtimewilltellifthedecisiontheymadetoflood 3.5% oftheirlandinexchangeforthehighestrateofelectricityinWestAfricawasworthitnowafterwatchingallofthat.
Areyoucurioushowelectricityanddamsactuallywork?
I certainlywasafterwritingallofthisandthat's why I immediatelycheckedoutbrilliantsincetheyhaveanentirecourseonelectricityandmagnetismaswellassectionscoveringwaterpressureandflowintheirscientificthinkingcoursethateasilyhelpedmeassomeonewithzerobackgroundinscienceorstemsubjectseasilyunderstandwhat I wastalkingabout.
Ifyou'relikeme, stemsubjectswerealwayschallengingtounderstandduringschoolbutbrilliantbecamethebreakthroughthat I neededbecauseitwillactuallygiveyoufunandengagingpuzzlestosolvelikethisonewhereyouactuallygettoapplyandtesttheknowledgethatyou'vebeenlearninginsteadofjustlisteningtolecturesorreadinghugeblocksoftextwithoutanyactiveengagement, brilliantisthehandsonlearningplatformthathelpsyoumasternewconceptsandskillsandstemandoflearningabouthoweverydayphysicsworksandthingslikedamselelectricityisn't exactlyyourthing.