Make a Coin Disappear with Water (Science Explained) @museumofscience

Uploaded April 2026 | Updated September 2026, 3 weeks ago

You can make a coin disappear with just water. 🪙💧

@AlexDainisPhD breaks down this optical science. As water fills the glass, light from the coin bends while passing through multiple materials, redirecting what you see so the coin is hidden from view. The coaster blocks where that light ends up, making it seem like the coin has vanished. Change the setup slightly by adding water on top of the coin first, and the illusion no longer works.

#STEM #ScienceExperiments #Science #WomeninSTEM #ScienceDemo #YouTubeShorts #Shorts

Everyday Awesome with the Museum of Science:
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Women in STEM with the Museum of Science:
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Short Science with the Museum of Science:
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Among the world's largest science centers, the Museum of Science engages millions of people each year to the wonders of science and technology through interactive exhibitions, digital programs, giant screen productions, and preK – 12 EiE® STEM curricula through the William and Charlotte Bloomberg Science Education Center. Established in 1830, the Museum is home to such iconic experiences as the Theater of Electricity, the Charles Hayden Planetarium, and the Mugar Omni Theater. Around the world, the Museum is known for digital experiences such as Mission: Mars on Roblox, and traveling exhibitions such as the Science Behind Pixar. Learn more at mos.org

Copyright © 2025. Museum of Science. All rights reserved. This video is owned by the Museum of Science and may not be reproduced, redistributed, or used in any manner without prior written permission from the Museum of Science.

Make a Coin Disappear with Water (Science Explained)

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$See Condiments Under Microscope! Ketchup, relish, and mustard walked into a microscope! Our friend Chloe Savard, also known as @tardibabe on Instagram, is back to show us the fascinating microscopic world hiding inside your favorite condiment trio. Under polarized light, ketchup transforms from a humble staple into a dazzling constellation of suspended particles. What youre seeing is the colloidal suspension that gives ketchup its characteristic texture: tomato cell wall fragments, pectin networks, spice particles, and insoluble solids interacting with polarized light according to their optical properties and internal structure. That riot of color isnt artifice, its physics. Together, these microscopic structures reveal the complex journey from raw tomato to the smooth, familiar condiment on your plate. Relish may be an overlooked condiment on the table, but under the microscope its anything but simple. What youre seeing is a world of cucumber cell wall networks, their honeycomb architecture remarkably intact even after pickling, alongside drifting plant fibers, suspended spice particles, and brine droplets refracting light into iridescent halos. Those four-petaled Maltese cross patterns? Thats birefringence, the optical signature of crystalline starch granules interacting with polarized light. Humble hot dog topping. Extraordinary microscopic universe. Mustard can pack a punch and that holds true at the microscopic level. That vivid yellow fragment at center is a piece of mustard seed tissue, its color coming from curcumin in the turmeric used to make yellow mustard. Surrounding it is a complex emulsion of ground seed husks, starch granules, and oil droplets, while those deep indigo-black streaks are seed coat fragments rich in pigmented phenolic compounds. Mustards signature heat and pungency come from a chemical reaction between myrosinase enzymes and glucosinolates released when mustard seeds are crushed, and the visual complexity youre seeing under the lens reflects just how much chemistry is packed into every squeeze. Three condiments. Three completely different chemistries. One very satisfying rabbit hole. 🌭🔬 #science #microscope #microscopy #microscopicworld #hotdog Short Science with the Museum of Science: https://www.youtube.com/playlist?list=PLxeUBLGfcIB9dB6n8zqwu_w2vG6DmLsKy Tardibabe x The Museum of Science: https://www.youtube.com/watch?v=zX3lW8oBhbw&list=PLxeUBLGfcIB9eIajeOhvpDyBG2P06b9I8 Women in STEM with the Museum of Science: https://www.youtube.com/playlist?list=PLxeUBLGfcIB9JQUT8YhlMsVxXU4P-h8rz Life Sciences with the Museum of Science: https://www.youtube.com/playlist?list=PLxeUBLGfcIB9RzVH_VbyXlfMKoe_jsvvb Among the worlds largest science centers and New Englands most attended cultural institution, the Museum of Science reaches over 300 million people a year — at Science Park and in museums around the world, in classrooms, and online. Established in 1830, the Museum is home to such iconic experiences as the Theater of Electricity, the Charles Hayden Planetarium, and the Mugar Omni Theater. The Museum influences formal and informal STEM education through research and national advocacy, including through its Youth Exploring Science (YES) program through the William and Charlotte Bloomberg Science Education Center. Around the world, the Museum is known for digital experiences such as Mission: Mars on Roblox and traveling exhibitions such as Science Behind Pixar. The Public Science Common, a state-of-the-art programming and event space featuring sweeping 270-degree views of Boston and Cambridge, and is a space to bring together people for a wide variety of programs and events. Learn more at https://www.mos.org/ Copyright © 2026. Museum of Science. All rights reserved. This video is owned by the Museum of Science and may not be reproduced, redistributed, or used in any manner without prior written permission from the Museum of Science.$