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eclipse safe light levels
I am new to this forum and hope someone can help me.
I intend to go to the USA to see the total eclipse in 2017. I have read about safe ways of viewing the eclipse but it appears that for a short period of totality the eclipse can be viewed with the naked eye.
If this is true I would be concerned that the eye will become accustomed to the increasing light as the sun reappears and will not register an unsafe level of light.
Can anyone tell me
1. Is this true ?(viewing safely with naked eye)
2. At what light level and frequency is safe/unsafe for the naked eye?
3. Can a light meter be used to judge the level or does a dedicated UV or IR meter need to be used?
Steve
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