Slide Rule : 無料・フリー素材/写真
Slide Rule / Instant Vantage
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | "The slide rule is a mechanical analog computer. The slide rule is used primarily for multiplication and division, and also for functions such as roots, logarithms and trigonometry, but is not normally used for addition or subtraction."_____ ___This was my father's when he was a young man, younger than what I am now. He's a mechanical engineer and I found this back home in the Philippines when we came home back in March. My brother has his Ping Pong paddle that is older than both of us and I wanted something as old if not older. So here's his slide rule...and I don't know how to use it...YET. Ha! |
| 撮影日 | 2011-05-31 01:19:59 |
| 撮影者 | Instant Vantage , NYC, USA |
| タグ | |
| 撮影地 | |
| カメラ | Canon EOS 7D , Canon |
| 露出 | f/2.8 |
| 開放F値 | f/2.8 |
| 焦点距離 | 200 mm |