[Home]  [Headlines]  [Latest Articles]  [Latest Comments]  [Post]  [Mail]  [Sign-in]  [Setup]  [Help]  [Register] 

"There’s a Word for the West’s Appeasement of Militant Islam" "The Bondi Beach Jihad: Sharia Supremacism and Jew Hatred, Again" "This Is How We Win a New Cold War With China" "How Europe Fell Behind" "The Epstein Conspiracy in Plain Sight" Saint Nicholas The Real St. Nick Will Atheists in China Starve Due to No Fish to Eat? A Thirteen State Solution for the Holy Land? US Sends new Missle to a Pacific ally, angering China and Russia Moscow and Peoking DeaTh noTice ... Freerepublic --- lasT Monday JR died "‘We Are Not the Crazy Ones’: AOC Protests Too Much" "Rep. Comer to Newsmax: No Evidence Biden Approved Autopen Use" "Donald Trump Has Broken the Progressive Ratchet" "America Must Slash Red Tape to Make Nuclear Power Great Again!!" "Why the DemocRATZ Activist Class Couldn’t Celebrate the Cease-Fire They Demanded" Antifa Calls for CIVIL WAR! British Police Make an Arrest...of a White Child Fishing in the Thames "Sanctuary" Horde ASSAULTS Chicago... ELITE Marines SMASH Illegals Without Mercy Trump hosts roundtable on ANTIFA What's happening in Britain. Is happening in Ireland. The whole of Western Europe. "The One About the Illegal Immigrant School Superintendent" CouldnÂ’t believe he let me pet him at the end (Rhino) Cops Go HANDS ON For Speaking At Meeting! POWERFUL: Charlie Kirk's final speech delivered in South Korea 9/6/25 2026 in Bible Prophecy 2.4 Billion exposed to excessive heat 🔴 LIVE CHICAGO PORTLAND ICE IMMIGRATION DETENTION CENTER 24/7 PROTEST 9/28/2025 Young Conservative Proves Leftist Protesters Wrong England is on the Brink of Civil War! Charlie Kirk Shocks Florida State University With The TRUTH IRL Confronting Protesters Outside UN Trump Meeting The UK Revolution Has Started... Brit's Want Their Country Back Inside Paris Dangerous ANTIFA Riots Rioters STORM Chicago ICE HQ... "Deportation Unit" SCRAPES Invaders Off The Sidewalk She Decoded A Specific Part In The Bible Muslim College Student DUMBFOUNDED as Charlie Kirk Lists The Facts About Hamas Charlie Kirk EVISCERATES Black Students After They OPENLY Support “Anti-White Racism” HEATED DEBATE "Trump Rips U.N. as Useless During General Assembly Address: ‘Empty Words’" Charlie Kirk VS the Wokies at University of Tennessee Charlie Kirk Takes on 3 Professors & a Teacher British leftist student tells Charlie Kirk facts are unfair The 2 Billion View Video: Charlie Kirk's Most Viewed Clips of 2024 Antifa is now officially a terrorist organization. The Greatness of Charlie Kirk: An Eyewitness Account of His Life and Martyrdom Charlie Kirk Takes on Army of Libs at California's UCR DR. ALVEDA KING: REST IN PEACE CHARLIE KIRK Steven Bonnell wants to murder Americans he disagrees with What the fagots LGBTQ really means I watched Charlie Kirk get assassinated. This is my experience. Elon Musk Delivers Stunning Remarks At Historic UK March (Tommy Robinson) Status: Not Logged In; Sign In United States News See other United States News Articles Title: Can you really go blind by staring at the Sun? Source: [None] URL Source: http://www.sciencefocus.com/qa/can-you-really-go-blind-staring-sun Published: Aug 21, 2017 Author: Steven A Collins Post Date: 2017-08-21 10:54:04 by no gnu taxes Keywords: None Views: 7413 Comments: 21 It’s possible, but the hazard is often exaggerated. Even at midday, a normal eye will only let in enough light to heat the retina by about 4°C. You need at least 10°C to cause thermal damage. Looking at the Sun during an eclipse for more than a minute can cause damage, because your pupils are more dilated during this, but it doesn’t result in total blindness and isn’t usually permanent. If the Sun is within 10 minutes of setting below a sea-level horizon, the more dangerous short-wavelength light is absorbed by the atmosphere and it should be quite safe to look at the Sun. Post Comment   Private Reply   Ignore Thread   Top • Page Up • Full Thread • Page Down • Bottom/Latest Begin Trace Mode for Comment # 4. #1. To: no gnu taxes (#0) 18 seconds. If you look directly at the sun for more than 15 seconds, you will burn a permanent spot on your retina that will never heal. A GLANCE probably won't destroy your vision, but what is going on up there is fascinating, and draws you in, and you really LOOK - and then you're blind for life. It isn't just during an eclipse. Stare at the sun on any day, and you'll burn your retinas blind. But who stares into the Sun? It's when there's an eclipse that the problem comes, because everybody wants to LOOK, and when looking, people are drawn to stare. And that will leave you blind. Vicomte13  posted on  2017-08-21   11:02:08 ET  Reply   Untrace   Trace   Private Reply   #4. To: Vicomte13 (#1) You overlook that significant damage can be caused by sunburn to the inner eye. And no pain receptors to warn you of the danger. 18 seconds. If you look directly at the sun for more than 15 seconds, you will burn a permanent spot on your retina that will never heal. I do think this is a little overhyped. Tooconservative  posted on  2017-08-21   11:51:24 ET  Reply   Untrace   Trace   Private Reply   Replies to Comment # 4. #6. To: Tooconservative (#4) I do think this is a little overhyped. Yes. A one second, two second glance isn't going to do anything. But 15-18 seconds will leave you with a blind spot for life. That's not a huge margin. I'll go out at the eclipse and glance at it when it happens, but that's just it - a glance - no staring at it. Stare at the midday sun for more than a few seconds on any day and you will be blind for life. Vicomte13  posted on  2017-08-21 12:50:25 ET  Reply   Untrace   Trace   Private Reply   End Trace Mode for Comment # 4. Top • Page Up • Full Thread • Page Down • Bottom/Latest

[Home]  [Headlines]  [Latest Articles]  [Latest Comments]  [Post]  [Mail]  [Sign-in]  [Setup]  [Help]  [Register]  Please report web page problems, questions and comments to webmaster@libertysflame.com