<p>I live in Austin, TX where the eclipse on August 21, 2017 reached its maximum point with ~66% of the sun covered by the moon.</p>

<p><strong>Why didn't it seem any darker than a normal time with 0% eclipse?</strong></p>

CC BY-SA 3.0
2017-08-21T19:55:31.760Z
Your eyes are designed to let you see in varying levels of illumination. If the day is a bit duller your eyes adapt.
adrianmcmenamin
CC BY-SA 3.0
2017-08-22T04:45:33.597Z
Human eye intensity response is not linear, it is more like logarithmic
mmainville
<solar-eclipse>
Why didn't it seem darker outside with 66% of the sun covered by the moon?
Adam Johns
# Why didn't it seem darker outside with 66% of the sun covered by the moon?

(Asked by: username_0 on 2017-08-21)

I live in Austin, TX where the eclipse on August 21, 2017 reached its maximum point with ~66% of the sun covered by the moon.

**Why didn't it seem any darker than a normal time with 0% eclipse?**

**Tags:** solar-eclipse

> **Comments:**
> **username_1**: Your eyes are designed to let you see in varying levels of illumination. If the day is a bit duller your eyes adapt.  
> **username_2**: Human eye intensity response is not linear, it is more like logarithmic  

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## 0 answers

