selfie fans warned about dangers of capturing eclipse on phones: taking photos is as dangerous as looking directly at the sun, scientists say - mylar sheets
This is an astronomical wonder that will not appear again in the next decade, so many Britons will want to capture personal souvenirs of this moment.
But the optometrist warned that in the near-
Friday's total solar eclipse could damage your eyes.
Even as dangerous as watching the sun directly.
Experts say that if people cannot take the necessary precautions against children, it is possible to permanently damage their eyesight.
Who will start school during the eclipse
Risk in particular.
Even if most of the sun is covered, you can look directly at the Sun, which may cause the sun to maculophy-
The destruction of the center of the retina caused by solar radiation. Daniel Hardiman
McCartney, a clinical consultant at the Royal Academy of Optometrists, said selfies can see that you "accidentally look directly at the sun when adjusting yourself and your mobile phone ".
He told the Daily Telegraph: "There is no safe system to see the eclipse directly.
However, watching a video or photo of a solar eclipse on the phone screen is not harmful.
In London, the public will have the opportunity to enjoy the solar eclipse safely using telescopes and Sun viewers at events organized by Regent's Park and the Royal Observatory Greenwich.
But be very careful.
Although it may just be a relatively small spot in the sky, it looks very dangerous due to the overall brightness of the sun.
The Sun looks about 400,000 times brighter than the full moon in the sky, and 4 trillion times brighter than 100-Watt bulb.
Staring at it for a few seconds can cause temporary or even permanent damage to your eyesight. The most damaging light when you look at the Sun is ultraviolet radiation.
Cells in the corner, the outer layer of the eye, blister or rupture when overexposed to ultraviolet rays
Just like your skin burns in the sun.
The symptoms of this situation are called "photocopies "--
In your eyes, the feeling of tearing, inflammation, and pain can last for hours --
Although it usually wears out.
However, if you look for a longer time, light-
The inductive cells on your retina will be overstimulated, releasing too many signaling chemicals that will damage the nearby tissue.
This is the so-called solar retina disease.
The effect of this will disappear in one to eighteen months.
However, a longer gaze can damage the spot of the eye and eventually lead to permanent blindness through the sun spot.
The rash of the Sun is a degradation of an oval rash.
Located near the center of the retina.
It's in charge of central, high-
If it is damaged, it will cause your vision to be less severe.
We need a healthy retina to provide us with fine central vision.
Boots optician Russell Peake told the Daily Mail that damage to the retina is often irreversible.
Complaints will include "black spots" in the middle of vision "--
Just like the flash you stare at the camera.
Just 20 seconds to watch the sun-
Even if it's behind the Moon
These destructive effects will be caused.
If you really want to see the sun, one way is to wear a pair of solar eclipse glasses.
The work is to block 99 light by using materials much darker than regular sunglasses such as Mylar.
It is not safe to just stare at the sun with sunglasses and should not be tried.
Can be bought without more than 1 pound ($1. 50)
So don't be fooled by some vendors who are trying to charge you more-though be careful to make sure you buy them from reputable sources.
Vice President Robin skagel
The chairman of the Popular Astronomy Association said: "Before you look at the sun safely, you need to reduce the light of the sun a lot.
"So far, partial food is more risky than whole food because people don't realize that even looking at a small piece of the sun is dangerous.
"It's absolutely right that people's eyesight is at serious risk.
If people can't find a way to view the eclipse correctly, then they shouldn't look because they might damage their eyes.
He said that the partial eclipse coincides with the beginning of the British school day and the rest of Europe, where the clock is one hour ahead of GMT.
There is also concern that the amazing sight of a solar eclipse may dazzle drivers as they watch the sun, or risk a crash simply by shaking their attention.
The Royal Academy of Ophthalmology says looking directly at the sun can cause retinal burns and can lead to severe, sometimes permanent loss of vision.
A case study it received involved a young patient who was suffering from solar disease due to watching the sun through a telescope.
The patient's central vision is permanently reduced.
This animation was designed to appear from eclipse's "perspective" as it will be in March 20.
The Royal Astronomical Society has produced a booklet on how to watch the eclipse safely, showing the shadows of Britain, Greenland, Europe and Russia.
Popular methods include projecting an image from a telescope or telescope onto a white card, projecting the image onto a wall using a mirror, or making a pin
A hole viewer on a card or a grain box like a lens.
A common spoon can also be used to generate multiple eclipse images on a piece of paper.
Around the UK, the proportion of the sun covered by the moon will increase to the north, ranging from 84 in London to 89 in Manchester and 93 in Edinburgh.
Time will be different.
In London, the solar eclipse begins at 8.
At twenty-four o'clock A. M. , reach the maximum range at 9.
31 am, end at 10. 41am.
For the observer in Edinburgh, the solar eclipse starts at 8.
30 am in the morning, see the top at 9. 35am.
Astronomers from space magazine Gemma Lavender do you need special equipment to see a solar eclipse?
It's too easy to look at the sun when a solar eclipse occurs, but you should never look at the solar eclipse with the naked eye, telescope, or telescope without a filter --
Otherwise, you have the risk of permanently damaging your vision.
That's not to say you can't watch a solar eclipse on Friday.
But you should make sure you have the right equipment to provide you with the right protection.
A dedicated telescope like a solar telescope allows you to observe a solar eclipse without risk.
However, unless you already have one and know that someone is or is working on solar astronomy, they could be a huge investment of several hundred pounds.
However, there are cheaper ways to observe a solar eclipse.
Is it OK to use solar glasses?
Many people buy sunglasses or watch an audience for a solar eclipse.
These can be bought cheaply from telescope dealers.
"Their working principle is to use a film that can block more than the sun's rays, allowing you to watch the eclipse safely.
Before using them though, you should make sure they don't have any damage and you should make sure you buy them from reputable dealers.
Don't use your audience at all if you have questions.
"How can you observe a solar eclipse with a telescope?
If you have a telescope, there are several ways you can observe a solar eclipse.
If you don't already own them, you can buy a solar filter that covers the aperture of the telescope to make sure you can watch the sun safely.
They are found to be made of glass, or the same as solar glasses, Mella films.
It is possible to make a solar filter using mai la sheets, but when making your own solar filter, please note --
Any scratches or fine holes can cause dangerous sunlight to enter your eyes.
"You should also avoid relying on lenses --
They can't handle the sun.
Telescope projection is also a safe way to observe a solar eclipse.
By using two large white cards, you can project an image of eclipse onto one card, when installing around the tube of the telescope using another method, it can be used as a mask to protect your eyes from the sun.
Focusing the eyepiece of the telescope while taking off the second card of the projected image will allow you to safely show the eclipse to a large group of people.
"You shouldn't use cheap plastic telescopes for telescope projection and make sure you have a cover for your telescope.
"Never look at the eclipse when the telescope is aligned with the sun, never leave the telescope unattended.
You should also make sure that your instrument does not overheat.
Can you view solar eclipse with household items?
"If you don't have a standard telescope, or forget to buy a solar viewer, then you can use a few household items so you don't miss this wonderful event.
Using a card, or anything with a small hole, you can project eclipse onto another card.
This is certainly one of the safest ways to watch a solar eclipse because you don't need to watch the sun at all.
"Washing dishes or barrels can also be lined with a black trash can lining and then filled with water to make a reflective surface to watch the eclipse safely.
When and where Eclipse is visible?
The eclipse will begin in the morning.
For British observers, the solar eclipse starts at 8.
30am, the peak is 9.
At 35 in the morning, it ends at 10.
41 am, so you should make sure you know where the sun rises from your position.
"Total solar eclipse --
That's 100 of the surface of the sun covered by the moon.
You can see it from the Faro and Svalbard Islands, but if you can't get to these places, many people can see a lot of partial eclipse --
Scotland, for example, will see about a solar disk covered by the moon.
"How dark will it be in England?
"In London, even where the solar coverage is 90, we will not notice any change in the brightness, as part of the sun's surface is still found.
Like a cloud passing through the sun
It's cloudy today, you know, but it's still light.