how to create a vacuum chamber
Chính sách bảo mật
January 22, 20195) Refrigeration compressor. If you try to keep pumping air, you could damage the pump. By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. Push the hose over the barbed end of the hose barb, twisting lightly to get it in. Helps children in understanding the environmental conditions that are created to ensure the quality and safety of the products. Finally, pump the syringe and observe the changes. We use cookies to make wikiHow great. Dead Spider Becomes Robot Gripper: Its Necrobotics! Roy Berntsen has updated the project titled Valkyrie High Temp 3d-Printer. Fit another one-way valve on the nozzle of the syringe. To learn more, like how to make a high-powered vacuum chamber using a pressure cooker, scroll down. A slot is then cut in the lid, and then filled with an excessive amount of silicone sealant. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. (you may have to check with your local HVAC guy to see how to release the refrigerant if it has any in the discarded freezer, fridge, dehumidifier, bar fridge, window a/c unit) always wear safety glasses! This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. In addition, we use third-party cookies to help us analyze and understand usage. I have picked up several paint pots from thrift store for almost nothing. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/e\/e7\/Make-a-Vacuum-Chamber-Step-12.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-12.jpg","bigUrl":"\/images\/thumb\/e\/e7\/Make-a-Vacuum-Chamber-Step-12.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-12.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. With a few basic items, you can build this in less than an afternoon and you can make it with a chamber that is as small or as large as you want. (Comment Policy). 3/16 I.D (4.7mm). A vacuum chamber can be a useful thing to have around the shop. Maker-written books designed to inform and delight! This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. To teach young children how a vacuum chamber works, you must conduct science experiments for kids. Soldering: clean and flux both the fitting and the pipe. Combined with an electric pump, the vacuum chamber passes its tests with flying colors, completely ruining some marshmallows in the process. Marcin Dbrowski liked Voices of the past, speak up!. How to make a vacuum chamber? Coat the silicone with cornstarch to keep it from sticking. Youll have full viewing since the vacuum chamber will be totally glass. Let us dive into the procedure of making a vacuum chamber for kids. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. To cut it, set the jigsaw on the edge of the acrylic and turn it on. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. It's best to have the valve switch on top if you can manage it. Polycarbonate is more like aluminum, in that itll bend quite a bit before it breaks. When using a refrigeration compressor, zip-tie a rolled-up piece of sock or material to arrest any oil vapor that may come out. is not very dangerous, but for experiments like this I would at least have liked to see some steel wire gauze / mesh wrapped around the box to prevent pieces from flyig very far. I guess it might be ok for degassing resin but thats about it. It can be used for all manner of purposes, from science experiments to degassing paints and epoxies.. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. Insert pipe into fitting and apply heat. Making a box a lot bigger as needed and then experimenting whether its up to the pressure would have been more usefull, and maybe even a bit spectacular. It is widely used in medical, aerospace and other industries. Pick up an old paint pot, autoclave,or pressure cooker and build off that. Take a lid consisting of a hole at the center and fit a one-way valve into it. https://www.education.com/science-fair/article/create-a-vacuum-chamber/, https://sciencing.com/make-vacuum-chamber-science-experiment-12059805.html, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=271, https://www.youtube.com/watch?v=jFUBblZgXwU&feature=youtu.be&t=10, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=80, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=90, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=94, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=153, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=147, https://www.youtube.com/watch?v=7fwytA5r2Mw&feature=youtu.be&t=21, https://www.youtube.com/watch?v=7fwytA5r2Mw&feature=youtu.be&t=121, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=290, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=190, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=192, https://www.youtube.com/watch?v=jFUBblZgXwU&feature=youtu.be&t=241, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=200, https://www.youtube.com/watch?v=ERRMoHfrjAI&feature=youtu.be&t=114. Yes, Ive sucked these down to the milli-torr range, they hold up quite well. Unfortunately, we werent able to sign you up just now. Will usually be one of 2 sizes on the compressors. Turn the drill on. He is the author or editor of over a dozen books on technology, DIY, and geek culture. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. You can add any materials inside the jar in order to create a low-pressure environment within the chamber. 2) 2 pop bottles from the recycle bin with lids to make the release valve. [VegOilGuy] does a great job of demonstrating copper soldering and the proper way to install the necessary taps and check valves. The air is removed from the jar through the syringe, and marshmallows were seen expanded than their regular size. like using an old fridge compressor to get the job done. Roy Berntsen has added a new log for Valkyrie High Temp 3d-Printer. 5 psi x 144 sq x 6 sides = 4,320 psi from all 6 sides. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/0\/0c\/Make-a-Vacuum-Chamber-Step-2.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-2.jpg","bigUrl":"\/images\/thumb\/0\/0c\/Make-a-Vacuum-Chamber-Step-2.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. Easy Science Project: How to Make a Vacuum Chamber? Those cheap vacuum gauges can be tuned if you take them apart, down to the point of exposing the clockwork or the units, bend the needle up so it cannot hit the peg and then do some careful subtle bending to the main curved tube (usually copper) until the relaxed state of the needle is to rest at zero then straighten out the needle so it rests gently on the peg. As it is its just a presentation that it is possible to suck some air out of a wooden box. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. 8) If you want to do electrical testing, use 14/2 house wiring. Enables children to understand the science behind the working of a vacuum chamber. Its possible the compressor you rob from the unit will be bad, but they are usually fine in most cases. Boosts confidence in children to work on DIY science projects related to vacuum chambers. Sign up for wikiHow's weekly email newsletter. (YouTube video, embedded below.). This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Hunt around. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, How to Defrost a Samsung Ice Maker: A Quick Guide, Homemade Dawn Powerwash: Easy Recipe for Refills. DC12V Auto Circuit Modifications Voltage Comparator LM393N Remote Control ( ~$7 ) Most HVAC style pumps will get to 20-40 microns. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/df\/Make-a-Vacuum-Chamber-Step-15.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-15.jpg","bigUrl":"\/images\/thumb\/d\/df\/Make-a-Vacuum-Chamber-Step-15.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-15.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. If your stopper is small enough, you can also use a drill to make the hole. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/c6\/Make-a-Vacuum-Chamber-Step-20.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-20.jpg","bigUrl":"\/images\/thumb\/c\/c6\/Make-a-Vacuum-Chamber-Step-20.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-20.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. (6.3mm) For a vacuum chamber? Not dangerously, the shards arent glass-sharp, but something to consider. I saw that metal tanker on utube get crushed, couldnt believe it! Make a hole at the center of the lid using a metal cutting tool under the guidance of elders. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/5f\/Make-a-Vacuum-Chamber-Step-11.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-11.jpg","bigUrl":"\/images\/thumb\/5\/5f\/Make-a-Vacuum-Chamber-Step-11.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-11.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. 1) Piece of scrap wood for the base 3/4 (19mm) or thicker, no splits or rough grain and as flat as can be. To connect the pump to the chamber, trace a rubber stopper on top of the jars lid so you can cut out a hole. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/7\/78\/Make-a-Vacuum-Chamber-Step-7.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-7.jpg","bigUrl":"\/images\/thumb\/7\/78\/Make-a-Vacuum-Chamber-Step-7.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-7.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. Include your email address to get a message when this question is answered. Last Updated: May 7, 2020 So take a piece of 3/4 acrylic or polycarbonate and a some rubber and make a lid. how is 5psi a modest vacuum? Make sure to screw the lid on tightly, then turn on the pump to remove the air! If you're not using one, cap off the top with a fitting or use a t-fitting instead. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/7\/73\/Make-a-Vacuum-Chamber-Step-5.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-5.jpg","bigUrl":"\/images\/thumb\/7\/73\/Make-a-Vacuum-Chamber-Step-5.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-5.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. You can also pop holes in the lid for a gauge and bulkhead fitting to connect to the pump. 2021 Tangible Play, Inc. All rights reserved. Your choice here will be recorded for all Make.co Websites. Please try again later. For example, if you pull a modest 5psi vacuum inside a one-foot-cube chamber theres more than 4000 lbs of squish from the outside trying to undo your work. or 1/4 I.D. There are 17 references cited in this article, which can be found at the bottom of the page. Enables children to learn about different types of vacuum chambers that are created in order to enhance the quality of numerous products that are manufacturing. Most importantly, they would develop observational and analytical skills while performing an experiment or working on a project. Open the lid of the jar and add a few marshmallows into it. No precautions for anything that could go wrong. Some of them are drying, cooling, coating, degassing, product testing, distillation, sterilization, crystallization, etc. Vaccuum usually (Usually !!!) thats a third of an atmosphere. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/52\/Make-a-Vacuum-Chamber-Step-9.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-9.jpg","bigUrl":"\/images\/thumb\/5\/52\/Make-a-Vacuum-Chamber-Step-9.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-9.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. This article has been viewed 30,298 times. That is so true, but I never would believe it, Because you dont think the air pressures there because your perfectly safe in it. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Incredibles 2 Disney/Pixar. How To Make A Rain Gauge DIY Experiment. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/2e\/Make-a-Vacuum-Chamber-Step-21.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-21.jpg","bigUrl":"\/images\/thumb\/2\/2e\/Make-a-Vacuum-Chamber-Step-21.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-21.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. Thats what the microwave is for. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/8d\/Make-a-Vacuum-Chamber-Step-18.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-18.jpg","bigUrl":"\/images\/thumb\/8\/8d\/Make-a-Vacuum-Chamber-Step-18.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-18.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. You can use a regular stainless steel pot, though make sure it's sturdy enough. You can do fun science experiments to see how things react inside of a vacuum. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. No calculation whatsoever whether it would be safe to do so. For the lid, note that acrylic will shatter in the manner of glass when it fails. They can follow the stepwise procedure given below to make a homemade vacuum chamber in a systematic way. No. Then, take a new empty syringe and make a hole near the nozzle of the syringe. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Get hands-on with kits, books, and more from the Maker Shed, Skill builder, project tutorials, and more, Subscribe to the premier DIY magazine today, Community access, print, and digital Magazine, and more, Browse and Vote on Your Favorite Projects, Learn More About the Amazing Maker Awards, Graphics and More to Help Spread the Word. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Peel the paper off the acrylic when you're done. So, what can you do with such a vacuum chamber? wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Some of the benefits of learning about a vacuum chamber for children are mentioned below: To know more information, explore science games for kids, STEM activities for kids in the kids learning section at Osmo. This article was co-authored by wikiHow Staff. Once up to temperature, lightly place your solder where the fitting meets the pipe. It can be used for all manner of purposes, from science experiments to degassing paints and epoxies. Use pliers to make sure these are screwed in well. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. It *does* hold the vacuum, and it even holds after Ive drilled a hole for a bulkhead union tube connector. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/8c\/Make-a-Vacuum-Chamber-Step-13.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-13.jpg","bigUrl":"\/images\/thumb\/8\/8c\/Make-a-Vacuum-Chamber-Step-13.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-13.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2022 wikiHow, Inc. All rights reserved. Hunt the neighborhood on garbage day for anyone throwing away a fridge, freezer, dehumidifier, window a/c unit, or bar fridge. you can always build one from scrap youve got lying around! 6) A glass dome. By signing up you are agreeing to receive emails according to our privacy policy. Most importantly, children will learn to perform an experiment at home by developing essential skills to enhance their learning experience. Theyre not something youd find in every workshop, but never fear you can always build one from scrap youve got lying around! This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. While this will create a vacuum chamber, it won't be very high-powered. For a better version that's a bit more complicated, make one out of a pressure cooker pot and an acrylic lid connected to a vacuum pump. After drilling, put it back to oven for 20min. This is one of the coolest science project ideas for kids. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Use an item that's only about 1/3 to 1/4 the size of the jar, as it will likely expand in the vacuum. To ensure there are no gaps between the stopper and lid, apply a stream of super glue all the way around the outside edge of the stopper. This creates an interest among children to work on DIY science projects ideas in a systematic way. Benefits of Learning about How to Make a Vacuum Chamber? Our trained team of editors and researchers validate articles for accuracy and comprehensiveness. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Learn more Building a vacuum chamber gives you a fun way to do experiments at home, as well as do things like degas silicone or stabilize brittle wood. Youll have a better chamber for about the same amount of work. The premier publication of maker projects, skill-building tutorials, in-depth reviews, and inspirational stories, accessible by all ages and skill ranges. Once you've screwed it in, take it back out. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Stay up-to-date with Osmo and also receive special deals and offers! Don't leave any extra space. It helps in testing the materials to determine their ability to withstand the pressure. And he has a new best-of writing collection and lazy mans memoir, called Borg Like Me. Kids Learning Kids Learning Science Experiments For Kids How to Make a Vacuum Chamber. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/1\/14\/Make-a-Vacuum-Chamber-Step-1.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-1.jpg","bigUrl":"\/images\/thumb\/1\/14\/Make-a-Vacuum-Chamber-Step-1.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":" \u00a9 2022 wikiHow, Inc. All rights reserved. This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2022 wikiHow, Inc. All rights reserved. A celebration of the Maker Movement, a family-friendly showcase of invention and creativity that gathers together tech enthusiasts, crafters, educators across the globe. In a second bowl, pour in enough cornstarch to mostly fill the bowl. Ask Hackaday: What Was Your First Electronics Win? Always push the jigsaw away from you; don't cut towards yourself. Then, take a tube or a pipe and fit it at one end of the valve of the syringe to the other end of the valve of the lid. Develops cognitive and observational skills while making a homemade vacuum chamber. 7) Silicone baking sheet. A flat plate covered in aluminium foil is placed on top, and the silicone is left to cure for several days.This is used to create a flat sealing surface for the lid to be placed on later. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2022 wikiHow, Inc. All rights reserved. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. There are many activities that vacuum chambers can perform in order to ensure the quality and safety of a product. Enables children to understand the applications of a vacuum chamber in the different sectors of industries and scientific research. Hackaday Podcast 179: Danger Chess, Corona Motors, An Omni-Walker, And A Fast Talking Telescope, This Week In Security: Symbiote, Smart Locks, And CosmicStrand, Trippy Bicycle Uses Multiple Partial Wheels, Never Too Rich Or Thin: Compress Sqlite 80%. The Dollar Store sometimes sells these at a cheap price. Leave it to set for about 10 minutes, and it should form a rubber-like seal around the top of the pot. To make a homemade vacuum chamber for kids using materials available in the house or in the school laboratories under the supervision of parents or teachers. Why Fedora Decided To Give CC0 Licensed Code The Boot, Where Pollution Hits The Road: The Growing Environmental Hazard Of Rubber Tires, The Surprisingly Manual Process Of Building Automotive Wire Harnesses, Biomimetic Surfaces: Copying Nature To Deter Bacteria And Keep Ship Hulls Smooth. You can even just use a reversed bike pump to pull out the air for a simpler vacuum. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/c5\/Make-a-Vacuum-Chamber-Step-16.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-16.jpg","bigUrl":"\/images\/thumb\/c\/c5\/Make-a-Vacuum-Chamber-Step-16.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-16.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/aa\/Make-a-Vacuum-Chamber-Step-3.jpg\/v4-460px-Make-a-Vacuum-Chamber-Step-3.jpg","bigUrl":"\/images\/thumb\/a\/aa\/Make-a-Vacuum-Chamber-Step-3.jpg\/aid8534158-v4-728px-Make-a-Vacuum-Chamber-Step-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
Sitemap 2
