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  • Chris Anderson: William, hi. Good to see you.

  • William Kamkwamba: Thanks.

  • CA: So, we've got a picture, I think? Where is this?

  • WK: This is my home. This is where I live.

  • CA: Where? What country?

  • WK: In Malawi, Kasungu. In Kasungu. Yeah, Mala.

  • CA: OK. Now, you're 19 now?

  • WK: Yeah. I'm 19 years now.

  • CA: Five years ago you had an idea. What was that?

  • WK: I wanted to make a windmill.

  • CA: A windmill?

  • WK: Yeah.

  • CA: What, to power -- for lighting and stuff?

  • WK: Yeah.

  • CA: So what did you do? How did you realize that?

  • WK: After I dropped out of school, I went to library,

  • and I read a book that would -- "Using Energy,"

  • and I get information about doing the mill.

  • And I tried, and I made it.

  • (Applause)

  • CA: So you copied -- you exactly copied the design in the book.

  • WK: Ah, no. I just --

  • CA: What happened?

  • WK: In fact, a design of the windmill that was in the book,

  • it has got four -- ah -- three blades,

  • and mine has got four blades.

  • CA: The book had three, yours had four.

  • WK: Yeah.

  • CA: And you made it out of what?

  • WK: I made four blades, just because I want to increase power.

  • CA: OK.

  • WK: Yeah.

  • CA: You tested three, and found that four worked better?

  • WK: Yeah. I test.

  • CA: And what did you make the windmill out of?

  • What materials did you use?

  • WK: I use a bicycle frame, and a pulley, and plastic pipe, what then pulls --

  • CA: Do we have a picture of that? Can we have the next slide?

  • WK: Yeah. The windmill.

  • CA: And so, and that windmill, what -- it worked?

  • WK: When the wind blows, it rotates and generates.

  • CA: How much electricity?

  • WK: 12 watts.

  • CA: And so, that lit a light for the house? How many lights?

  • WK: Four bulbs and two radios.

  • CA: Wow.

  • WK: Yeah.

  • (Applause) CA: Next slide --

  • so who's that?

  • WK: This is my parents, holding the radio.

  • CA: So what did they make of -- that you were 14, 15 at the time --

  • what did they make of this? They were impressed?

  • WK: Yeah.

  • CA: And so what's your -- what are you going to do with this?

  • WK: Um --

  • CA: What do you -- I mean -- do you want to build another one?

  • WK: Yeah, I want to build another one --

  • to pump water and irrigation for crops.

  • CA: So this one would have to be bigger?

  • WK: Yeah.

  • CA: How big?

  • WK: I think it will produce more than 20 the watts.

  • CA: So that would produce irrigation for the entire village?

  • WK: Yeah.

  • CA: Wow. And so you're talking to people here at TED

  • to get people who might be able to help in some way

  • to realize this dream?

  • WK: Yeah, if they can help me with materials, yeah.

  • CA: And as you think of your life going forward,

  • you're 19 now,

  • do you picture continuing with this dream of working in energy?

  • WK: Yeah. I'm still thinking to work on energy.

  • CA: Wow. William, it's a real honor to have you at the TED conference.

  • Thank you so much for coming.

  • WK: Thank you.

  • (Applause)

Chris Anderson: William, hi. Good to see you.

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A2 US TED ca windmill william irrigation copied

【TED】William Kamkwamba: How I built a windmill (William Kamkwamba: How I built a windmill)

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    Zenn posted on 2018/02/17
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