File:Knijpkat 996637.JPG
冇更高解像度嘅圖像。
Knijpkat_996637.JPG （500 × 480 像素，檔案大細：71 KB ，MIME類型：image/jpeg）
摘要
| 描述 |
English: A w:en:dyno torch, a hand powered electric torch, disassembled to show mechanism. Squeezing the handle (left) spins the flywheel through the plastic rack and pinion gear. The flywheel has a ring-shaped magnet on it which, combined with the coil of wire (right), makes a brushless AC generator. The magnetic field of the spinning magnet induces electric current in the coil of wire, which powers the light bulb. The torch only generates light when it is pumped, so it doesn't need an ON/OFF switch. Modified by Midnightcomm to correct white balance and be cropped. |
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| 日期 | |||||||||
| 來源 | Photo taken by author with w:Nikon Coolpix 950 camera | ||||||||
| 作者 | Bios | ||||||||
| 許可 (重用呢個檔案) |
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檔案歷史
撳個日期／時間去睇響嗰個時間出現過嘅檔案。
| 日期／時間 | 縮圖 | 尺寸 | 用戶 | 註解 | |
|---|---|---|---|---|---|
| 現時 | 2006年5月1號 (一) 01:43 | | 500 × 480（71 KB） | Midnightcomm | {{Information| |Description=Corrected white balance (the previous version had a blue tint), made background solid white, cropped version of previous file version. |Source=Wikimedia Commons |Date=[[April 30], 2006 }} Modified by uploader. |
| 2005年9月14號 (三) 15:14 |  | 640 × 480（62 KB） | Bios~commonswiki | interior of a w:en:dyno torch (by squeezing it, a magnet starts spinning and thus generates electricity in a wire coil; pretty much like a bike dynamo) - taken with w:Nikon Coolpix 950 - {{GFDL}} |
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