{"id":3071,"date":"2020-04-10T13:43:32","date_gmt":"2020-04-10T13:43:32","guid":{"rendered":"http:\/\/mentalblocks.co.uk\/blog\/?p=3071"},"modified":"2020-04-10T13:43:35","modified_gmt":"2020-04-10T13:43:35","slug":"rainbows-everywhere","status":"publish","type":"post","link":"http:\/\/mentalblocks.co.uk\/blog\/rainbows-everywhere\/","title":{"rendered":"Rainbows Everywhere"},"content":{"rendered":"\n<p>There are rainbows in windows, and on buildings, all round the world at the moment so I went looking for all the rainbows we have ever made. I surprised myself when I realised how many we have. Some of them are not rainbow-shaped but they are rainbow colours.<\/p>\n\n\n\n<p><em>Scroll to the bottom to see what we currently have in our window.<\/em><\/p>\n\n\n\n<p><strong>Some Square Over The Rainbow<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"862\" height=\"862\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-square.jpg\" alt=\"\" class=\"wp-image-3073\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-square.jpg 862w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-square-768x768.jpg 768w\" sizes=\"(max-width: 862px) 100vw, 862px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p>This blanket was made way back in 1997. It is obvious that it has the seven colours of the rainbow and it has 49 small squares in 7 columns and 7 rows. They represent square numbers and one way of calculating them.<br><br>Each colour has an odd number of squares. There is one violet square, 3 indigo, 5 blue, 7 green, 9 yellow, 11 orange and 13 red, making the total of 49. Square numbers are the sum of odd numbers.<br><br>The first square number is 1.<br>The second is 4 (2 x 2), which is 1 + 3.<br>The third is 9 (3 x 3), which is 1 + 3 + 5.<br>\u2026 and so on<br>The seventh is 1 + 3 + 5 + 7 + 9 + 11 + 13 = 49<br><br><a href=\"https:\/\/www.ravelry.com\/patterns\/library\/some-square-over-the-rainbow\">Buy the pattern<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Wheely Colourful<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/wheely-square-1024x1024.jpg\" alt=\"\" class=\"wp-image-3076\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/wheely-square-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/wheely-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/wheely-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/wheely-square-768x768.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/wheely-square.jpg 1368w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p>Is this rainbow curved? You might think so but each triangle has straight sides until the next one is joined to it. <\/p>\n\n\n\n<p>It is a fun afghan, knitted on straight needles and made entirely from scraps. <\/p>\n\n\n\n<p>It has hundreds of knots, left showing. A few knots look like a mistake; lots of them become a design feature.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.ravelry.com\/patterns\/library\/wheely-colourful\">Buy the pattern<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<p>I divided all my DK weight oddments into seven piles. It was sometimes difficult to decide which pile a particular yarn should go into. Looking at a pile with half-closed eyes made it easy to spot anything that was seriously out of place. I then tied lengths together to make seven large balls. <\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"638\" height=\"637\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/balls-square.jpg\" alt=\"\" class=\"wp-image-3084\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/balls-square.jpg 638w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/balls-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/balls-square-150x150.jpg 150w\" sizes=\"(max-width: 638px) 100vw, 638px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"639\" height=\"640\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/close-up-square-1-rotated.jpg\" alt=\"\" class=\"wp-image-3086\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/close-up-square-1-rotated.jpg 639w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/close-up-square-1-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/close-up-square-1-150x150.jpg 150w\" sizes=\"(max-width: 639px) 100vw, 639px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Double Vision<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/double-vision-flat-square-1024x1024.jpg\" alt=\"\" class=\"wp-image-3089\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/double-vision-flat-square-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/double-vision-flat-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/double-vision-flat-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/double-vision-flat-square-768x768.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/double-vision-flat-square.jpg 1242w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p>This is not quite a rainbow because it uses ten colours. <\/p>\n\n\n\n<p>Yes, it really does only use ten colours of yarn, though you can see 55 different shades from the mixes of those yarns. It shows all the possible combinations of ten colours. <\/p>\n\n\n\n<p><a href=\"https:\/\/www.ravelry.com\/patterns\/library\/double-vision\">Buy the pattern<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Alternative Rainbows<\/strong><\/p>\n\n\n\n<p>In 2018 we were involved with a maths project called <a href=\"http:\/\/www.mirror-pillar.co.uk\/\">Mirror Pillar<\/a>, using anamorphic art. Anamorphic designs look completely different when you reflect them in a cylindrical mirror. We made several large pieces to accompany the pillar on its travels round the country. We also made some rainbows. They are not all the shape you would expect and they give even more unexpected shapes when they are reflected in a cylinder.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.ravelry.com\/patterns\/sources\/alternative-rainbows\/patterns\">Download the pattern<\/a><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"819\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-1-cropped-1024x819.jpg\" alt=\"\" class=\"wp-image-3093\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-1-cropped-1024x819.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-1-cropped-300x240.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-1-cropped-768x614.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-1-cropped-1536x1229.jpg 1536w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-1-cropped-2048x1639.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"819\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/stripes-and-mirror-9-1024x819.jpg\" alt=\"\" class=\"wp-image-3095\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/stripes-and-mirror-9-1024x819.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/stripes-and-mirror-9-300x240.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/stripes-and-mirror-9-768x614.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/stripes-and-mirror-9-1536x1229.jpg 1536w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/stripes-and-mirror-9.jpg 2010w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"819\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squaring-2-cropped-1024x819.jpg\" alt=\"\" class=\"wp-image-3094\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squaring-2-cropped-1024x819.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squaring-2-cropped-300x240.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squaring-2-cropped-768x614.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squaring-2-cropped-1536x1229.jpg 1536w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squaring-2-cropped-2048x1639.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"819\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/semicircle-1-cropped-1024x819.jpg\" alt=\"\" class=\"wp-image-3096\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/semicircle-1-cropped-1024x819.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/semicircle-1-cropped-300x240.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/semicircle-1-cropped-768x614.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/semicircle-1-cropped-1536x1229.jpg 1536w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/semicircle-1-cropped.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Barbie Rainbows<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1000\" height=\"1000\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbows-3-square.jpg\" alt=\"\" class=\"wp-image-3100\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbows-3-square.jpg 1000w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbows-3-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbows-3-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbows-3-square-768x768.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p>Barbie likes rainbows too.<\/p>\n\n\n\n<p>Her rainbows are a little unconventional. The two long dresses have stripes that get wider. There is one violet ridge of knitting, two indigo, three blue, etc.<\/p>\n\n\n\n<p>The short skirt forms a circle with seven sections when it is flat.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.ravelry.com\/patterns\/library\/barbie-rainbows\">Download the pattern<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Rainbow Spinners<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/spinners-square-1024x1024.jpg\" alt=\"\" class=\"wp-image-3105\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/spinners-square-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/spinners-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/spinners-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/spinners-square-768x768.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/spinners-square.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p>You probably made these spinners out of cardboard when you were a child. A few years ago we made lots of knitting and crochet versions  in all kinds of colour combinations. Four of them were rainbow colours. <\/p>\n\n\n\n<p>I didn&#8217;t write a pattern at the time but have now written outline instructions for making them.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.ravelry.com\/patterns\/library\/rainbow-spinners\">Download the instructions<\/a><\/p>\n\n\n\n<p><\/p>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ttfmake-embed-wrapper aligncenter\" style=\"max-width: 960px;\"><iframe loading=\"lazy\" title=\"Rainbow Spinners\" width=\"960\" height=\"540\" src=\"https:\/\/www.youtube.com\/embed\/bGVGVLwKn5k?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p><br><strong>Tower of Hanoi<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"645\" height=\"645\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/purple-spindle-square.jpg\" alt=\"\" class=\"wp-image-3109\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/purple-spindle-square.jpg 645w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/purple-spindle-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/purple-spindle-square-150x150.jpg 150w\" sizes=\"(max-width: 645px) 100vw, 645px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p>The <em>Tower of Hanoi<\/em> is a mathematical game or puzzle, which can also be used as a simple stacking toy for a young child. A number of rings are arranged, on a post, in size order, to form a tower. There are two spare posts. The object of the game is to move all the pieces onto another post to form a new tower, with the pieces in the same order as the original. The rules are <\/p>\n\n\n\n<ul><li>Only one ring may be moved at a time.<\/li><li>A ring can be moved onto any rod and placed on top of the pieces that are already there.<\/li><li>No ring may be placed on top of a smaller disk.<\/li><\/ul>\n\n\n\n<p><a href=\"https:\/\/www.ravelry.com\/patterns\/library\/tower-of-hanoi\">Buy the pattern<\/a><\/p>\n\n\n\n<p><\/p>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Some Wear Over The Rainbow<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-02-hanging-coiled-square-1024x1024.jpg\" alt=\"\" class=\"wp-image-3120\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-02-hanging-coiled-square-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-02-hanging-coiled-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-02-hanging-coiled-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-02-hanging-coiled-square-768x768.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/rainbow-02-hanging-coiled-square.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p>Seven crochet cords fastened together to make a rainbow scarf.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.ravelry.com\/patterns\/library\/some-wear-over-the-rainbow\">Download the pattern<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Shadow Triangles<\/strong><\/p>\n\n\n\n<p>Photos never do justice to illusion knitting. These photos were particularly difficult to take because of the reflections on the window. <\/p>\n\n\n\n<p>What you see from in front is not the same as what you see from the side.<\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-1-1024x1024.jpg\" alt=\"\" class=\"wp-image-3122\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-1-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-1-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-1-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-1-768x768.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-1-1536x1536.jpg 1536w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-1-2048x2048.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-3-1024x1024.jpg\" alt=\"\" class=\"wp-image-3123\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-3-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-3-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-3-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-3-768x768.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-3-1536x1536.jpg 1536w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/window-3-2048x2048.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p>These photos show the illusion more effectively. When you look from the side you see triangles on both boards. When you look from directly in front you see squares in one and diagonal lines in the other.<\/p>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/diagonal-light-square-1024x1024.jpg\" alt=\"\" class=\"wp-image-3127\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/diagonal-light-square-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/diagonal-light-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/diagonal-light-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/diagonal-light-square-768x769.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/diagonal-light-square.jpg 1050w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/straight-light-square-1024x1024.jpg\" alt=\"\" class=\"wp-image-3128\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/straight-light-square-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/straight-light-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/straight-light-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/straight-light-square-768x768.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/straight-light-square-1536x1536.jpg 1536w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/straight-light-square-2048x2048.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squares-light-square-1024x1024.jpg\" alt=\"\" class=\"wp-image-3126\" srcset=\"http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squares-light-square-1024x1024.jpg 1024w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squares-light-square-300x300.jpg 300w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squares-light-square-150x150.jpg 150w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squares-light-square-768x768.jpg 768w, http:\/\/mentalblocks.co.uk\/blog\/wp-content\/uploads\/2020\/04\/squares-light-square.jpg 1056w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><a href=\"https:\/\/www.ravelry.com\/patterns\/library\/shadow-triangles-2\">Buy the pattern<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are rainbows in windows, and on buildings, all round the world at the moment so I went looking for all the rainbows we have ever made. I surprised myself when I realised how many we have. Some of them are not rainbow-shaped but they are rainbow colours. Scroll to the bottom to see what &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[37,108,86,109],"_links":{"self":[{"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3071"}],"collection":[{"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3071"}],"version-history":[{"count":38,"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3071\/revisions"}],"predecessor-version":[{"id":3131,"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3071\/revisions\/3131"}],"wp:attachment":[{"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3071"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mentalblocks.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}