Partial eclipse

Two years ago we had a partial eclipse (about 85% to 90%) of the sun. This meant that the moons shadow cut into the Sun’s disc but didn’t completely cover it.

I knew that if you make a hole in a peice of card and then hold the card infront if a plain white or pale surface you can project the image of the sun onto the wall. This is better than trying to use solar goggles which are not always safe to use. YOU MUST NEVER LOOK DIRECTLY AT THE SUN. You could be Blinded. Even if you use sun glasses you are in danger, sun glasses do not cut out the full spectra of the sun and your eyes can be burned. You must not look at the sun! The second two photos were to show the suns image  cast on the wall.

Anyway after that strong warning I will continue… .

When the sun shone onto the card a small image of it was  projected behind the card. This is called a pinhole projection. Then as the moon glided across the sun a little bite appeared to cut into the sun. Gradually it increased. In this case the sun was passing across the face of the sun in one direction but because the projection was upside down the moon appeared to bite in to the right hand lower side but it was actually passing left to upper left.

As the moon crept across the face of the sun I noticed the shadows got less strong. Then I saw the shadow of my weeping fig on the wall. Amazingly all the leaves combined to cast lots of curved moon shadows onto the wall. I went outside and noticed the same thing was happening where the light was coming through the tree leaves. I’ve seen this phenomenon photographed and described on astronomy programmes.

Finally I took a shot of the light vshining through the trees. Carefully not looking at the sun and ensuring the camera lens was not pointed directly at the sun.

Life is interesting  I hope you get the chance to see an eclipse.

X

Blood moon

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Tonight there is a full lunar eclipse which is when the Earth comes between the Sun and the Moon and the earth casts its shadow on the moon.

As it progresses first there is shadow on one side of the moon. Gradually. Like a solar eclipse the curve of the Earth cuts into the Moon. As it progresses the white light from the sun is cut out by Earth’s shadow until only red light passes through Earth’s atmosphere and the Moon turns orangey red. Then the Moon starts to pull out of the shadow and gradually returns to normal

Tonight the moon is at its closest approach to earth so it is known as a super moon.

As a matter of interest I decided to try and draw what a flat earth would look like…. It would cast a flat shadow.. When it was fully eclipsed the moon would appear to be cut in half. Possibly by a red line? Other effects of a flat earth would be daylight all over the upper side then darkness all over the upper side as we tumbled through space. Also what is on the underside and is there a Trumpesque wall round the edge to keep the water in? I recently read an article about gravity. On a flat earth the people on the edge would be lying down as the gravity would be pulling everyone towards the centre of the disc……

Anyway enough rambling

X

When the sun sets

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The sun was setting and the sky turned pink at spode today. I looked up and saw the moon. A tiny bit bigger than half moon and I realised that you could work out where the sun was setting. Basically imagine you were shining a torch on a ball. If the torch was directly to the side if the ball the ball would be exactly half light and 🌗 half dark  Now if the torch was lower but shining directly on the ball it would be half light and half dark but tipped at an angle depending how low below the horizon the torch (or ☀ sun) was. Now imagine if the torch was level but was shining slightly to the side of the moon nearest us? Then the line between light and dark would shift and curve. The line shifts every night till full moon, then as it passes full moon the shadow starts to get cast on the other side. This leads to the understanding that when we get an eclipse the Earth gets directly between the Moon and the Sun… . Oh I know all of this is simple, but I’d never actually thought it out for myself……

P.S. now 5 hours later the angle of the moon is tipped up so that the curve is on a slant … so the sun is clearly lower down and the moon has moved. .but it also shows the world is rotating too…