https://inkandequations.com/explore/ An independent, student-founded journal that puts real science inside stories, poems, satire, speeches and essays. en-in https://inkandequations.com/unpacked/how-an-old-ball-swings-the-wrong-way/ https://inkandequations.com/unpacked/how-an-old-ball-swings-the-wrong-way/ Arjun learned to swing the ball by tilting the seam. Then he watched a Test match where the bowler did everything the same and the ball went the other way. Here's what happens when the boundary layer turns turbulent on both sides. Unpacked The editors Sun, 08 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/the-second-bulge/ https://inkandequations.com/unpacked/the-second-bulge/ Our poem about the tides said the far side of the Earth swells too. Here is the full reason, and what tides are quietly doing to the Earth and the Moon. Unpacked The editors Sat, 07 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-measles-needs-almost-everyone/ https://inkandequations.com/unpacked/why-measles-needs-almost-everyone/ The vaccine piece said a vaccine shows your immune system a wanted poster. But the poster protects people who never saw it, too. Here's the one-line equation that says how many of us need to look. Unpacked The editors Sat, 07 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/find-your-blind-spot/ https://inkandequations.com/unpacked/find-your-blind-spot/ Our review of the human eye said every eye ships with a blind spot. Here's how to find yours in thirty seconds, and what your brain is doing to hide it. Unpacked The editors Fri, 06 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/one-ultraviolet-photon-beats-a-billion-radio-ones/ https://inkandequations.com/unpacked/one-ultraviolet-photon-beats-a-billion-radio-ones/ The nephew told the family group that a million feathers won't break a window the way one stone will, and got removed. Here's the experiment that proved him right, and won Einstein his Nobel Prize. Unpacked The editors Fri, 06 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-fast-charging-slows-down/ https://inkandequations.com/unpacked/why-fast-charging-slows-down/ The charging piece pictured lithium being marched uphill into the graphite. So why does the march race to 80 per cent and then crawl? Because the last few seats in a crowded hall are the hardest to fill. Unpacked The editors Fri, 06 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-water-boils-lower-in-the-mountains/ https://inkandequations.com/unpacked/why-water-boils-lower-in-the-mountains/ The rajma in Leh refused to cook at 88 °C. Here's the full science of why, and how explorers once used boiling water to measure mountains. Unpacked The editors Fri, 06 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/never-shelter-under-the-tallest-tree/ https://inkandequations.com/unpacked/never-shelter-under-the-tallest-tree/ Mr Bhalerao, having given up on the roof, chose the tallest tree in the society garden as his new safe spot. Here's exactly how a bolt chooses where to land, and why that tree is one of the worst places he could stand. Unpacked The editors Thu, 05 Nov 2026 00:00:00 GMT https://inkandequations.com/deep-dives/the-most-valuable-sand-on-earth/ https://inkandequations.com/deep-dives/the-most-valuable-sand-on-earth/ Nearly every phone, laptop and satellite begins as a lump of quartz. Getting from one to the other is one of the strangest supply chains in the world. Deep Dives The editors Thu, 05 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-the-lake-floor-stays-at-4-degrees/ https://inkandequations.com/unpacked/why-the-lake-floor-stays-at-4-degrees/ The ice poem promised that the fish below swim on at four degrees all day. Why four, and not zero? The answer involves two forces fighting inside every drop of cold water, and a lake that flips itself over every autumn. Unpacked The editors Thu, 05 Nov 2026 00:00:00 GMT https://inkandequations.com/rhetoric/in-defence-of-mistakes/ https://inkandequations.com/rhetoric/in-defence-of-mistakes/ A speech arguing that being wrong, carefully and in public, is the most useful thing a scientist can do. Rhetoric The editors Wed, 04 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-stars-stop-at-iron/ https://inkandequations.com/unpacked/why-stars-stop-at-iron/ The stardust poem says stars fuse their way up to iron and stop, "for when it fuses iron, the profit's gone". Here's the single curve behind that line, which also explains nuclear power stations and why a star's death takes less than a second. Unpacked The editors Wed, 04 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-you-cant-crack-a-knuckle-twice/ https://inkandequations.com/unpacked/why-you-cant-crack-a-knuckle-twice/ Mr Joshi has timed it many times: twenty minutes before the same knuckle will crack again. His wife confirms it. Here's what is happening inside the joint during those twenty minutes, and what it has in common with a bottle of soda. Unpacked The editors Wed, 04 Nov 2026 00:00:00 GMT https://inkandequations.com/satire/product-review-the-human-eye/ https://inkandequations.com/satire/product-review-the-human-eye/ We tested the most popular camera on the planet. It has been on the market for a very long time and it shows. Satire & Humour The editors Tue, 03 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/the-pole-star-is-only-visiting/ https://inkandequations.com/unpacked/the-pole-star-is-only-visiting/ Ms Kulkarni called Polaris "the only star in the sky that is not going anywhere tonight". The word that matters is "tonight". Over thousands of years, the Earth's axis wanders, and the job of Pole Star passes from star to star. Unpacked The editors Tue, 03 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-rain-doesnt-hit-like-a-bullet/ https://inkandequations.com/unpacked/why-rain-doesnt-hit-like-a-bullet/ The raindrop poem says rain "can sting, but never cuts you deep", because drag matches weight long before the ground. Without air, a drop from a cloud two kilometres up would arrive at about 700 km/h. Here's the maths of the brake. Unpacked The editors Tue, 03 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/the-suns-core-is-less-intense-than-a-compost-heap/ https://inkandequations.com/unpacked/the-suns-core-is-less-intense-than-a-compost-heap/ In its statement, the Sun said its protons occasionally tunnel through a barrier, and called it Tuesday. Here's the rest of the chain, the ghostly particles it fires through you every second, and the reason the Sun doesn't explode. Unpacked The editors Mon, 02 Nov 2026 00:00:00 GMT https://inkandequations.com/poetry/tide/ https://inkandequations.com/poetry/tide/ A poem about why the sea rises twice a day, not once. Poetry The editors Mon, 02 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-the-grapes-never-ripened/ https://inkandequations.com/unpacked/why-the-grapes-never-ripened/ Rohan's bananas ripened in the mango box. The grapes beside them, in the same cloud of ethylene for two days, didn't change at all. Mummy said grapes are picked when they're ready, and that's that. Here's why she's right. Unpacked The editors Mon, 02 Nov 2026 00:00:00 GMT https://inkandequations.com/stories/the-rajma-that-defeated-my-grandmother/ https://inkandequations.com/stories/the-rajma-that-defeated-my-grandmother/ A family trip to Leh, a pot of rajma that refuses to soften, and a pressure cooker that suddenly makes sense. Stories The editors Sun, 01 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-humid-heat-can-be-deadlier/ https://inkandequations.com/unpacked/why-humid-heat-can-be-deadlier/ Nani's matka beat the Jodhpur heat by eleven degrees. The one in Mumbai managed two. Your body is a matka too, and the same number that measures a clay pot's limit measures yours. Unpacked The editors Sun, 01 Nov 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-octopus-blood-is-blue/ https://inkandequations.com/unpacked/why-octopus-blood-is-blue/ The octopus poem says its blood is blue because "copper lends a bluish shade". Here's why copper and iron give different colours, why your veins look blue when your blood never is, and why an octopus gets out of breath. Unpacked The editors Sun, 01 Nov 2026 00:00:00 GMT https://inkandequations.com/deep-dives/how-a-fridge-moves-heat-uphill/ https://inkandequations.com/deep-dives/how-a-fridge-moves-heat-uphill/ Heat naturally flows from hot to cold. Your fridge spends all day forcing it the other way. Here's how. Deep Dives The editors Sat, 31 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-the-monsoon-arrives-from-the-south-west/ https://inkandequations.com/unpacked/why-the-monsoon-arrives-from-the-south-west/ The monsoon piece said moist ocean air flows in towards hot land. Then why doesn't it come straight from the south? Because on a spinning planet, nothing travels in a straight line, and the equator flips which way it bends. Unpacked The editors Sat, 31 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/your-head-is-older-than-your-feet/ https://inkandequations.com/unpacked/your-head-is-older-than-your-feet/ The GPS piece said satellite clocks run fast by 38 millionths of a second a day, and that engineers simply correct for it. That sounds like an excuse for a broken clock. Here's why it isn't, and how scientists measured time running faster at the top of a staircase. Unpacked The editors Sat, 31 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/how-one-atom-in-a-million-turns-sand-into-a-switch/ https://inkandequations.com/unpacked/how-one-atom-in-a-million-turns-sand-into-a-switch/ The silicon piece ended with nine-nines purity as "a blank page". Here's what chipmakers write on it: a few atoms of phosphorus and boron, placed with extraordinary care, which turn a crystal of rock into billions of tiny switches. Unpacked The editors Fri, 30 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/how-to-weigh-pluto-without-touching-it/ https://inkandequations.com/unpacked/how-to-weigh-pluto-without-touching-it/ The Pluto speech says early guesses made Pluto as big as Earth, and that it kept shrinking. What finally settled it was a smudge on a photograph in 1978, and one line of algebra any student can do. Unpacked The editors Fri, 30 Oct 2026 00:00:00 GMT https://inkandequations.com/satire/terms-and-conditions-for-gravity/ https://inkandequations.com/satire/terms-and-conditions-for-gravity/ Nobody has ever read them. Everybody has agreed to them. Satire & Humour The editors Wed, 28 Oct 2026 00:00:00 GMT https://inkandequations.com/stories/counting-the-storm/ https://inkandequations.com/stories/counting-the-storm/ A power cut, a thunderstorm and a little sister who won't come out from under the blanket until somebody can tell her exactly how far away it is. Stories The editors Sat, 24 Oct 2026 00:00:00 GMT https://inkandequations.com/poetry/old-light/ https://inkandequations.com/poetry/old-light/ A poem about looking up and seeing the past, from a Moon that is one second out of date to a galaxy whose light set off before there were people. Poetry The editors Wed, 21 Oct 2026 00:00:00 GMT https://inkandequations.com/rhetoric/the-case-for-guessing/ https://inkandequations.com/rhetoric/the-case-for-guessing/ A speech arguing that every student should be taught to make good guesses, on purpose. Rhetoric The editors Tue, 20 Oct 2026 00:00:00 GMT https://inkandequations.com/stories/the-spoonful/ https://inkandequations.com/stories/the-spoonful/ Every night, Ammi saves one spoonful of curd. It takes a week away, a cold December windowsill and two ruined batches for anyone to ask why. Stories The editors Sat, 17 Oct 2026 00:00:00 GMT https://inkandequations.com/poetry/what-the-leaf-knows/ https://inkandequations.com/poetry/what-the-leaf-knows/ A poem about where a tree actually comes from. Poetry The editors Wed, 14 Oct 2026 00:00:00 GMT https://inkandequations.com/deep-dives/your-phone-finds-you-with-clocks-in-space/ https://inkandequations.com/deep-dives/your-phone-finds-you-with-clocks-in-space/ The blue dot on your map depends on atomic clocks, the speed of light, a fourth satellite you didn't know you needed, and a correction from Einstein. Deep Dives The editors Tue, 13 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/meet-the-bacteria-in-your-curd/ https://inkandequations.com/unpacked/meet-the-bacteria-in-your-curd/ A spoonful of old curd turned warm milk into new curd overnight, and a cold windowsill stopped it dead. Here's who was doing the work, and why they work best as a team. Unpacked The editors Mon, 12 Oct 2026 00:00:00 GMT https://inkandequations.com/stories/the-sweating-matka/ https://inkandequations.com/stories/the-sweating-matka/ Nani swears matka water is the only water that tastes like water. In Jodhpur, her pot beats the heat by eleven degrees. In Mumbai, in July, it barely tries. Stories The editors Mon, 12 Oct 2026 00:00:00 GMT https://inkandequations.com/poetry/most-of-you-was-made-in-a-star/ https://inkandequations.com/poetry/most-of-you-was-made-in-a-star/ A poem about where your atoms came from, and why the stars that made them stopped at iron. Poetry The editors Sun, 11 Oct 2026 00:00:00 GMT https://inkandequations.com/satire/family-group-confirms-5g-causes-colds/ https://inkandequations.com/satire/family-group-confirms-5g-causes-colds/ The forward was in red letters, with three exclamation marks and a photo of a tower. Scientists were not consulted. Then they were. Satire & Humour The editors Sat, 10 Oct 2026 00:00:00 GMT https://inkandequations.com/satire/local-man-furious-antibiotics-did-nothing-for-his-cold/ https://inkandequations.com/satire/local-man-furious-antibiotics-did-nothing-for-his-cold/ "I took the whole strip," says man, still sneezing. Satire & Humour The editors Sat, 10 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/why-thunder-rumbles/ https://inkandequations.com/unpacked/why-thunder-rumbles/ Meher's thunder came "rolling over the building like furniture being dragged across the floor upstairs". A bang made in a few millionths of a second shouldn't roll for ten. Here's why it does. Unpacked The editors Sat, 10 Oct 2026 00:00:00 GMT https://inkandequations.com/stories/the-ball-that-wouldnt-swing/ https://inkandequations.com/stories/the-ball-that-wouldnt-swing/ Arjun polished the ball like a fast bowler on television. It went perfectly, disappointingly straight, and the reason was in his fingers. Stories The editors Fri, 09 Oct 2026 00:00:00 GMT https://inkandequations.com/rhetoric/give-every-school-a-telescope/ https://inkandequations.com/rhetoric/give-every-school-a-telescope/ A speech arguing that the cheapest science lesson no school is teaching is pointed at the sky, and that it has almost nothing to do with zoom. Rhetoric The editors Thu, 08 Oct 2026 00:00:00 GMT https://inkandequations.com/rhetoric/stop-saying-just-a-theory/ https://inkandequations.com/rhetoric/stop-saying-just-a-theory/ An opinion piece on the most misunderstood word in science. Rhetoric The editors Wed, 07 Oct 2026 00:00:00 GMT https://inkandequations.com/satire/sun-promises-five-billion-more-years/ https://inkandequations.com/satire/sun-promises-five-billion-more-years/ The statement was released this morning and reached Earth eight minutes and twenty seconds later. It contained an apology, a physics lesson and a correction about summer. Satire & Humour The editors Wed, 07 Oct 2026 00:00:00 GMT https://inkandequations.com/poetry/raindrops-are-not-shaped-like-raindrops/ https://inkandequations.com/poetry/raindrops-are-not-shaped-like-raindrops/ A poem about the shape everyone draws, the shape that actually falls, and why the rain never hits harder than it does. Poetry The editors Tue, 06 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/the-oxygen-you-breathe-came-out-of-water/ https://inkandequations.com/unpacked/the-oxygen-you-breathe-came-out-of-water/ The tree poem says a leaf frees oxygen "from water, not the air". It sounds like a mistake. It isn't, and the way we found out involved purple bacteria, rotten-egg gas and a heavy kind of oxygen. Unpacked The editors Tue, 06 Oct 2026 00:00:00 GMT https://inkandequations.com/stories/dead-at-twenty-per-cent/ https://inkandequations.com/stories/dead-at-twenty-per-cent/ At the top of Kunzum Pass, at the exact moment I wanted a photo, my phone gave up. An hour later it came back, looking innocent. Stories The editors Mon, 05 Oct 2026 00:00:00 GMT https://inkandequations.com/rhetoric/yes-a-tomato-is-a-fruit/ https://inkandequations.com/rhetoric/yes-a-tomato-is-a-fruit/ An argument to settle the lunch-table debate, featuring the US Supreme Court, a strawberry that isn't a berry, and the lesson that a definition is a tool. Rhetoric The editors Sun, 04 Oct 2026 00:00:00 GMT https://inkandequations.com/satire/bacteria-demand-credit-for-idli/ https://inkandequations.com/satire/bacteria-demand-credit-for-idli/ "Every night we work," said a spokesperson, one thousandth of a millimetre long. "Then somebody's mother gets all the compliments." Satire & Humour The editors Sat, 03 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/astronauts-are-falling-and-missing/ https://inkandequations.com/unpacked/astronauts-are-falling-and-missing/ Gravity's terms and conditions said astronauts float because they're falling "with very good aim". That sounds like a trick. Here's the exact aim required, worked out with a cannon Isaac Newton never fired. Unpacked The editors Sat, 03 Oct 2026 00:00:00 GMT https://inkandequations.com/deep-dives/why-the-sky-is-blue-and-sunsets-are-red/ https://inkandequations.com/deep-dives/why-the-sky-is-blue-and-sunsets-are-red/ The same tiny effect explains the blue of noon and the orange of evening, and why the sky on Mars does the opposite. Deep Dives The editors Sat, 03 Oct 2026 00:00:00 GMT https://inkandequations.com/poetry/the-octopus-has-three-hearts/ https://inkandequations.com/poetry/the-octopus-has-three-hearts/ A poem about the most overengineered animal in the sea: three hearts, blue blood, arms that taste, and eyes wired the sensible way round. Poetry The editors Fri, 02 Oct 2026 00:00:00 GMT https://inkandequations.com/deep-dives/why-the-monsoon-turns-up-in-june/ https://inkandequations.com/deep-dives/why-the-monsoon-turns-up-in-june/ A season's worth of weather arrives within a week or so of the same date every year. Here's the engine behind it, and why it partly runs on its own rain. Deep Dives The editors Fri, 02 Oct 2026 00:00:00 GMT https://inkandequations.com/stories/the-mango-that-ripened-the-bananas/ https://inkandequations.com/stories/the-mango-that-ripened-the-bananas/ My brother hid three green bananas and a bunch of grapes in Mummy's mango box. Two days later the bananas had overtaken the whole bunch. The grapes had not moved. Stories The editors Thu, 01 Oct 2026 00:00:00 GMT https://inkandequations.com/unpacked/how-to-win-the-sweets-jar/ https://inkandequations.com/unpacked/how-to-win-the-sweets-jar/ The heartbeat speech argued that good guessing can be taught. Here's a chance to prove it at the next school fair, with one sum, one number to remember, and a crowd to help you. Unpacked The editors Wed, 30 Sep 2026 00:00:00 GMT https://inkandequations.com/satire/lightning-strikes-twice-ignores-saying/ https://inkandequations.com/satire/lightning-strikes-twice-ignores-saying/ "I organised my whole life around that saying," said a man holding an umbrella, standing in the one spot he believed was safe. Satire & Humour The editors Wed, 30 Sep 2026 00:00:00 GMT https://inkandequations.com/rhetoric/give-grandmas-remedies-a-fair-test/ https://inkandequations.com/rhetoric/give-grandmas-remedies-a-fair-test/ An argument that checking a home remedy properly is the most respectful thing you can do with it, and that a ship's doctor showed how in 1747. Rhetoric The editors Tue, 29 Sep 2026 00:00:00 GMT https://inkandequations.com/stories/north-by-the-pole-star/ https://inkandequations.com/stories/north-by-the-pole-star/ The lights went out across the whole campsite, and the only phone with any battery went with them. Our instructor pointed at the sky and asked for our fists. Stories The editors Mon, 28 Sep 2026 00:00:00 GMT https://inkandequations.com/deep-dives/charging-means-pushing-lithium-uphill/ https://inkandequations.com/deep-dives/charging-means-pushing-lithium-uphill/ Plug in your phone and nothing seems to happen. Inside, billions of billions of lithium ions are being forced to move house, from a comfortable home to a cramped one, and that is where the energy is stored. Deep Dives The editors Sun, 27 Sep 2026 00:00:00 GMT https://inkandequations.com/poetry/salt-is-two-dangerous-things/ https://inkandequations.com/poetry/salt-is-two-dangerous-things/ A poem about the most ordinary thing on the dinner table, made from a metal that bursts into flame in water and a gas that makes you choke. Poetry The editors Sat, 26 Sep 2026 00:00:00 GMT https://inkandequations.com/rhetoric/pluto-is-fine/ https://inkandequations.com/rhetoric/pluto-is-fine/ A speech arguing that what happened to Pluto in 2006 was science at its best, and that it had happened once before, to a world nobody has made a T-shirt about. Rhetoric The editors Fri, 25 Sep 2026 00:00:00 GMT https://inkandequations.com/satire/man-cracks-knuckles-to-annoy-mother/ https://inkandequations.com/satire/man-cracks-knuckles-to-annoy-mother/ His mother said it would ruin his hands. He has brought a study, a second study, and an MRI video. Satire & Humour The editors Thu, 24 Sep 2026 00:00:00 GMT https://inkandequations.com/deep-dives/a-vaccine-is-a-wanted-poster/ https://inkandequations.com/deep-dives/a-vaccine-is-a-wanted-poster/ Your immune system is a brilliant detective that starts every case days behind. A vaccine hands it the description in advance, and it never forgets a face. Deep Dives The editors Wed, 23 Sep 2026 00:00:00 GMT https://inkandequations.com/poetry/ice-floats-which-is-lucky-for-fish/ https://inkandequations.com/poetry/ice-floats-which-is-lucky-for-fish/ A poem about the one liquid that breaks the rule almost everything else obeys, and the fish that owe their winters to it. Poetry The editors Tue, 22 Sep 2026 00:00:00 GMT https://inkandequations.com/rhetoric/there-is-no-such-thing-as-chemical-free/ https://inkandequations.com/rhetoric/there-is-no-such-thing-as-chemical-free/ An argument that the most common label in the shop is the only one guaranteed to be false, and that the right question was asked five hundred years ago. Rhetoric The editors Mon, 21 Sep 2026 00:00:00 GMT https://inkandequations.com/deep-dives/bread-is-held-up-by-yeast/ https://inkandequations.com/deep-dives/bread-is-held-up-by-yeast/ Every loaf is a sponge full of gas made by living things. The holes are where the gas was, and the walls between them are made of a protein net you built with your hands. Deep Dives The editors Sun, 20 Sep 2026 00:00:00 GMT