How much percent of the sun would be covered during an eclipse before you notice anything unusual from the eye?

[Heatblizzard]

Just using the naked eye how close to total eclipse before you notice any actual effects? How total does an annular eclipse need to be before any effects happen? Some annular eclipses are like 90 percent total and others can be more like 97 to 98 percent so I wonder if those few percents make a difference there?

[DarkCrystalMethod]

Don't stare directly at a solar eclipse. Don't stare at the sun. There are cheap paper "solar eclipse" glasses for that, or just look at reflected light so you don't burn out your retinas).
You might start to notice at about 50% to 75%(my numbers, but I'm probably close) but for sure after that it would get dark like some clouds got in the way.

Stare at a lunar eclipse as long as you want.

And if the sun gets between the Earth and the Moon, well... you're probably going to notice.

[Hairy Hands Harry]

Depends on if it is a cloudy day or not.
:)

[ChickenTacos]

Ask Donald Trump. He has stared into a solar eclipse.

[Heitor Villa-Lobos]

You shouldn't stare directly.

That said, around 90% will cause the sensation of late afternoon.

Only total eclipses will get dark.

[76561198356019466]

As alluded to:
https://www.youtube.com/watch?v=-0I4f8PasIU

[Heatblizzard]

Escrito originalmente por ChickenTacos:

Ask Donald Trump. He has stared into a solar eclipse.

The media distorts eveyrthing he says so take it with a huge grain of salt. Most likely he looked into the direction of the sun but not right at it. With todays media you could say 'I looked towards the sun to see if the sky darkened at all and found out the human eye is great at retaining light' the media will only say 'Looked towards the sun' and twist it to mean something else entirely. Everyone on the internet will somehow simultaneously crap their pants though I think the crapping part is also fake.

[Heatblizzard]

Escrito originalmente por Heitor Villa-Lobos:

You shouldn't stare directly.

That said, around 90% will cause the sensation of late afternoon.

Only total eclipses will get dark.

You don't have to stare at the sun to see if it gets dark or not just look near it but not at it.

In fact whether or not your eyes get damaged it will cause everything to seem brighter then it is because your focal points expand.

[Heatblizzard]

Escrito originalmente por DarkChrystmasMethod:

Don't stare directly at a solar eclipse. Don't stare at the sun. There are cheap paper "solar eclipse" glasses for that, or just look at reflected light so you don't burn out your retinas).
You might start to notice at about 50% to 75%(my numbers, but I'm probably close) but for sure after that it would get dark like some clouds got in the way.

Stare at a lunar eclipse as long as you want.

And if the sun gets between the Earth and the Moon, well... you're probably going to notice.

That's what I'm talking about is how much of the sun gets between before the sky starts to get dark? Is there a difference between 90 and 98 percent?

[Heatblizzard]

Escrito originalmente por Harry The Gamer:

Depends on if it is a cloudy day or not.
:)

Even on a cloudy day is there a difference?

[cSg|mc-Hotsauce]

You'll start noticing it get slightly dark at about 10% and cloudy days can make it seem darker earlier, depending on the type of clouds and how thick they are.

[L1qu1dator]

I remember seeing about 20% eclipse, and you could tell the difference, though it's barely visible. Like a very, very thin layer of clouds.