大たい気き差さ

noun

atmospheric refraction; astronomical refraction

Technical term in astronomy and optics for the bending of light as it passes through the Earth's atmosphere.

• 大たい気き差さのため、地ち平へい線せん近ちかくの星ほしは実じっ際さいより高たかい位い置ちに見みえる。

  Due to atmospheric refraction, stars near the horizon appear higher than they actually are.