TEDGlobal 2007
William Kamkwamba: How I built a windmill
William Kamkwamba om, hvordan man bygger en vindmølle
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Da han var blot 14 år gammel, byggede den malawiske opfinder William Kamkwamba en elektricitetsproducerende vindmølle ud af reservedele, til sin familie, ved hjælp af råskitser han fandt i en biblioteksbog.
William Kamkwamba - Inventor
To power his family's home, young William Kamkwamba built an electricity-producing windmill from spare parts and scrap -- starting him on a journey detailed in the book and film "The Boy Who Harnessed the Wind." Full bio
To power his family's home, young William Kamkwamba built an electricity-producing windmill from spare parts and scrap -- starting him on a journey detailed in the book and film "The Boy Who Harnessed the Wind." Full bio
Double-click the English transcript below to play the video.
00:29
Chris Anderson: William, hi. Good to see you.
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Chris Anderson: William, hej. Godt at se dig.
00:31
William Kamkwamba: Thanks.
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William Kamkwamba: Tak.
00:32
CA: So, we've got a picture, I think? Where is this?
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CA: Så, vi har et billede her, tror jeg nok? Hvor er dette?
00:37
WK: This is my home. This is where I live.
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WK: Dette er mit hjem. Det er, hvor jeg kommer fra.
00:41
CA: Where? What country?
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CA: Hvor? Hvilket land?
00:43
WK: In Malawi, Kasungu. In Kasungu. Yeah, Mala.
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WK: Malawi, Kasungu. I Kasungu. Ja, Mala.
00:46
CA: OK. Now, you're 19 now?
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CA: OK. Så, du er 19 år nu?
00:49
WK: Yeah. I'm 19 years now.
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WK: Ja. Jeg er 19 år nu.
00:51
CA: Five years ago you had an idea. What was that?
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CA: For fem år siden fik du en ide. Hvad var det for en?
00:54
WK: I wanted to make a windmill.
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WK: Jeg ville bygge en vindmølle.
00:56
CA: A windmill?
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CA: En vindmølle?
00:57
WK: Yeah.
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WK: Ja.
00:58
CA: What, to power -- for lighting and stuff?
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CA: For hvad, at drive lys og sådan?
01:02
WK: Yeah.
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WK: Ja.
01:04
CA: So what did you do? How did you realize that?
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CA: Så hvad gjorde du så? Hvordan fik du realiseret det?
01:07
WK: After I dropped out of school, I went to library,
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WK: Efter jeg droppede ud af skolen, gik jeg ned på biblioteket
01:11
and I read a book that would -- "Using Energy,"
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og læste en bog om at -- "Bruge Energi,"
01:15
and I get information about doing the mill.
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og jeg fandt information om, hvordan man laver en mølle.
01:18
And I tried, and I made it.
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Og jeg prøvede, og jeg lavede en.
01:20
(Applause)
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(Klapsalver)
01:30
CA: So you copied -- you exactly copied the design in the book.
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CA: Så kopierede -- du kopierede præcist designet i bogen.
01:34
WK: Ah, no. I just --
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WK: Ah, nej. Jeg gjorde bare --
01:36
CA: What happened?
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CA: Hvad skete?
01:38
WK: In fact, a design of the windmill that was in the book,
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WK: Egenligt, det design af vindmøllen, som var i den bog,
01:42
it has got four -- ah -- three blades,
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den havde fire -- nej -- tre vinger,
01:46
and mine has got four blades.
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og min har 4 vinger.
01:49
CA: The book had three, yours had four.
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CA: Bogen havde 3, din havde 4.
01:51
WK: Yeah.
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WK: ja
01:52
CA: And you made it out of what?
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CA: Og du lavede den ud af hvad?
01:54
WK: I made four blades, just because I want to increase power.
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WK: Jeg brugte fire blade, fordi jeg ville have mere kraft.
01:59
CA: OK.
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CA: OK.
02:00
WK: Yeah.
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WK: Ja
02:01
CA: You tested three, and found that four worked better?
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CA: Du testede med tre, og fandt ud af, at fire var bedre?
02:03
WK: Yeah. I test.
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WK: Ja. Jeg testede.
02:05
CA: And what did you make the windmill out of?
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CA: Og hvad lavede du vindmøllen af?
02:08
What materials did you use?
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Hvilke materialer brugte du?
02:10
WK: I use a bicycle frame, and a pulley, and plastic pipe, what then pulls --
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WK: Jeg brugte et cykelstel, en talje, og plasticrør, hvilket så trækker --
02:16
CA: Do we have a picture of that? Can we have the next slide?
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CA: Har du et billede af det? Kan vi venligst se næste billede?
02:19
WK: Yeah. The windmill.
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WK: Ja. Vindmøllen.
02:21
CA: And so, and that windmill, what -- it worked?
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CA: Så, det er vindmøllen, hvad -- fungerede den?
02:25
WK: When the wind blows, it rotates and generates.
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WK: Når vinden blæser, roterer den og laver strøm.
02:30
CA: How much electricity?
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CA: Hvor meget strøm?
02:31
WK: 12 watts.
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WK: 12 watt.
02:33
CA: And so, that lit a light for the house? How many lights?
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CA: Og, det giver så lys i huset? Hvor mange lamper?
02:38
WK: Four bulbs and two radios.
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WK: fire pærer og to radioer.
02:40
CA: Wow.
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CA: Wow.
02:41
WK: Yeah.
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WK: Ja.
02:42
(Applause) CA: Next slide --
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(Klapsalver) CA: Næste billede --
02:52
so who's that?
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så hvem er det?
02:54
WK: This is my parents, holding the radio.
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WK: Det er mine forældre, som holder radioen.
02:57
CA: So what did they make of -- that you were 14, 15 at the time --
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CA: Så hvad syntes de om det -- du var jo 14, 15 år på det tidspunkt --
03:01
what did they make of this? They were impressed?
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hvad syntes de om det? Var de imponerede?
03:04
WK: Yeah.
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WK: Ja.
03:05
CA: And so what's your -- what are you going to do with this?
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CA: Hvad er så din -- hvad gør du med det her?
03:07
WK: Um --
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WK: Øhm --
03:09
CA: What do you -- I mean -- do you want to build another one?
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CA: Hvad har du tænkt dig -- jeg mener -- vil du bygge flere?
03:13
WK: Yeah, I want to build another one --
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WK: Ja, jeg vil bygge en mere --
03:16
to pump water and irrigation for crops.
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til at pumpe vand og vande -- til vanding af afgrøder.
03:21
CA: So this one would have to be bigger?
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CA: Så den næste er nødt til at blive større?
03:23
WK: Yeah.
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WK: Ja.
03:24
CA: How big?
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CA: Hvor stor?
03:25
WK: I think it will produce more than 20 the watts.
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WK: Jeg tror den kommer til at producere mere end 20 watts.
03:31
CA: So that would produce irrigation for the entire village?
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CA: Så den kan producere vanding for hele landsbyen?
03:35
WK: Yeah.
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WK: Ja.
03:37
CA: Wow. And so you're talking to people here at TED
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CA: Wow. Og derfor kommer du her og giver din tale til TED
03:40
to get people who might be able to help in some way
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for at møde folk, der måske kan hjælpe dig på en eller anden måde
03:44
to realize this dream?
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at realisere din drøm?
03:46
WK: Yeah, if they can help me with materials, yeah.
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WK: Ja, hvis de kan hjælpe mig med byggematerialer ja.
03:50
CA: And as you think of your life going forward,
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CA: Og hvordan forstiller du dit liv længere fremme i tiden,
03:53
you're 19 now,
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du er 19 nu,
03:56
do you picture continuing with this dream of working in energy?
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forestiller du dig med denne drøm fremover, at arbejde med energi?
04:00
WK: Yeah. I'm still thinking to work on energy.
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WK: Ja, jeg planlægger at arbejde med energi fremover.
04:05
CA: Wow. William, it's a real honor to have you at the TED conference.
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CA: Wow. William, det er en ære at have dig her på TED Konferencen.
04:09
Thank you so much for coming.
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Mange tak fordi du ville komme.
04:11
WK: Thank you.
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WK: Tak
04:13
(Applause)
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(Klapsalver)
ABOUT THE SPEAKER
William Kamkwamba - InventorTo power his family's home, young William Kamkwamba built an electricity-producing windmill from spare parts and scrap -- starting him on a journey detailed in the book and film "The Boy Who Harnessed the Wind."
Why you should listen
William Kamkwamba, from Malawi, is a born inventor. When he was 14, he built an electricity-producing windmill from spare parts and scrap, working from rough plans he found in a library book called Using Energy and modifying them to fit his needs. The windmill he built powers four lights and two radios in his family home.
After reading about Kamkwamba on Mike McKay's blog Hactivate (which picked up the story from a local Malawi newspaper), TEDGlobal Conference Director Emeka Okafor spent several weeks tracking him down at his home in Masitala Village, Wimbe, and invited him to attend TEDGlobal on a fellowship. Onstage, Kamkwamba talked about his invention and shared his dreams: to build a larger windmill to help with irrigation for his entire village, and to go back to school.
Following Kamkwamba's moving talk, there was an outpouring of support for him and his promising work. Members of the TED community got together to help him improve his power system (by incorporating solar energy), and further his education through school and mentorships. Subsequent projects have included clean water, malaria prevention, solar power and lighting for the six homes in his family compound; a deep-water well with a solar-powered pump for clean water; and a drip irrigation system. Kamkwamba himself returned to school, and is now attending the African Leadership Academy, a new pan-African prep school outside Johannesburg, South Africa.
Kamkwamba's story is documented in his autobiography, The Boy Who Harnessed the Wind: Creating Currents of Electricity and Hope. A documentary about Kamkwamba, called William and the Windmill, won the Documentary Feature Grand Jury award at SXSW in 2013 (watch a trailer ). You can support his work and other young inventors at MovingWindmills.org.
William Kamkwamba | Speaker | TED.com