In 1911, Einstein proposed that light bending by the Sun’s gravitational field could be measured during a total solar eclipse. The first opportunity in which this measurement would be tried was during the total solar eclipse of October 10, 1912. We report about the expeditions sent to Brazil to observe this eclipse, including the one from the Córdoba Observatory, from Argentina, which aimed to measure this Einstein’s effect.

中文翻译：

---

1912 年 10 月 10 日的日食探险和首次尝试测量太阳光的弯曲

1911 年，爱因斯坦提出可以在日全食期间测量太阳引力场引起的光弯曲。第一次尝试这种测量的机会是在 1912 年 10 月 10 日的日全食期间。我们报告了派往巴西观察这次日食的探险队，包括来自阿根廷的科尔多瓦天文台的探险队，其目的是测量这个爱因斯坦效应。