The UK will experience a partial solar eclipse on Wednesday, August 12, and it's set to be the best one in almost 30 years. While Greenland, Iceland, and northern Spain will see totality, the UK will witness a deep partial eclipse, with around 90% of the sun blocked out.
Why this eclipse is significant
The last total eclipse visible from the UK was in August 1999, when Cornwall and parts of Devon experienced totality. Total solar eclipses occur in the same location only once every 360 to 410 years, and the next total eclipse in any part of the UK isn't due until 2090. This week's event might be your best chance to see something close to a total eclipse.
Safe viewing methods
A solar eclipse happens when the moon passes between the sun and Earth, blocking the sun's light either totally or partially. Even when the sun is blocked, looking directly at an eclipse without protection can harm your eyes. The safest way to view an eclipse is through special eclipse glasses, which have stronger UV protection than regular sunglasses. However, if you don't have these glasses, you can make a DIY pinhole projector.
How to make a pinhole projector
Twinkl Resources shared a video on TikTok detailing the steps to create your own pinhole projector. It's easy to do and can be a fun activity for children during the summer holidays.
- Grab a cardboard box.
- Cut out a white piece of paper and stick it down to one side of the box.
- On the opposite side, cut out two square holes.
- Cover one square hole with kitchen foil, sticking it down with tape.
- Use a pin to poke a small hole in the centre of the foil.
- Make sure the box is completely sealed at the top, so the only gaps are the pin hole and the empty square.
Your pinhole projector is now ready to use.
How to use a pinhole projector
On the day of the eclipse, head outside and turn your back to the sun. Angle yourself so that sunlight hits the kitchen foil, allowing light to go through the pinhole. Put the box up to your face and look through the other square hole. You should see the sun reflected onto the white paper at the back of the box, where you'll observe the eclipse in action.
Other safe viewing options
If you don't have a pinhole projector, you can use eclipse glasses. According to Royal Museums Greenwich, glasses must have a safety certification 'ISO 12312-2' or 'ISO 12312-2:2015' printed on them. Be cautious with old glasses, as they may not be safe, especially if the lenses are scratched or creased. Alternatively, you can watch the Royal Observatory's live stream on August 12, which will broadcast a free, live feed of the eclipse from London.
