| 発行体 | Austria |
|---|---|
| 年号 | 2025 |
| 種類 | Non-circulating coin |
| 額面 | 20 Euros |
| 通貨 | Euro (2002-date) |
| 材質 | Silver (.925) |
| 重量 | 22.42 g |
| 直径 | 34 mm |
| 厚さ | |
| 形状 | Round |
| 製造技法 | Colored, Milled |
| 向き | Medal alignment ↑↑ |
| 彫刻師 | |
| 流通終了年 | |
| 参考文献 | KM#3392 |
| 表面の説明 | A circular wave curves upwards on the obverse of the coin. Representing an Einstein ring, this is the pictorial multiplication of the light source on the left. Between the light source and the observer, a cluster of galaxies is simplified in the centre, which deflects the light many times due to its gravity. The German for ‘gravitational lens’ refers to its function in this context. The formula Δ∅=4GM/bcÇ, which can be used to calculate the deflection of light, completes the design. |
|---|---|
| 表面の文字体系 | Latin |
| 表面の銘文 | REPUBLIK ÖSTERREICH 2025 Δ∅ Δ∅= 4GM/bc² LICHT-QUELLE GRAVITATIONS-LINSE 20 EURO |
| 裏面の説明 | The coin’s reverse has the same basic shape as the obverse but features a colour-printed interpretation of an Einstein ring. |
| 裏面の文字体系 | Latin |
| 裏面の銘文 | EINSTEINRING |
| 縁 | Plain |
| 鋳造所 | |
| 鋳造数 | 2025 - Proof - 30 000 |
| Numisquare ID | 2443954760 |
| コメント |