Engineers lead students in groundwater-contamination lesson on Earth Day : 無料・フリー素材/写真
Engineers lead students in groundwater-contamination lesson on Earth Day / USACE Europe District
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Bryan McClure and Robert Mackey, U.S. Army Corps of Engineers Europe District senior project managers, taught approximately 75 Department of Defense Education Activity-Europe sixth-grade students to build and contaminate model aquifers, or underground water reservoirs, April 22 to demonstrate the impact of pollutants in drinking water on Earth Day. Read the full story: 1.usa.gov/1QCniTh. (U.S. Army Corps of Engineers photo by Jennifer Aldridge) |
| 撮影日 | 2016-04-21 16:21:32 |
| 撮影者 | USACE Europe District , Wiesbaden, Germany |
| タグ | |
| 撮影地 | |
| カメラ | Canon EOS 5D Mark III , Canon |
| 露出 | 0.013 sec (1/80) |
| 開放F値 | f/4.0 |
| 焦点距離 | 24 mm |