Applied Science

A horn-shaped speaker is louder than an equivalent speaker without the horn. This fact doesn't violate physics because the horn is acting as a matching device between the speaker and the air around it. Photo Credit for phonograph: Norman Bruderhofer, Collection of John Lampert-Hopkins

https://www.patreon.com/AppliedScience ---- Donate here! I built a tiny radio into a ballpoint pen that allows the user to hear audio by casually biting the pen.

I present some of my favorite tools and techniques from the workshop. https://www.patreon.com/AppliedScience - Support Applied Science Cable tie gun - www.mcmaster.com 5401T11 Devcon plastic welder - http://www.amazon.com/Devcon-22045-Plastic-Welder-Dev-Tube/dp/B003NUGL9S/ E6000 adhesive - http://www.amazon.com/E6000%C2%AE-Craft-Adhesive-3-7-oz/dp/B007TSYNG8 3M DP-8005 - www.mcmaster.com 7467A32 Ikea lamp - http://www.ikea.com/us/en/catalog/products/20169658/ Well nuts - www.mcmaster.com 93495A130 Irwin tap wrench sockets - http://www.amazon.com/Hanson-3095001-2-Piece-Adjustable-Socket/dp/B000TGM7HY/ Double-sided tape - http://www.findtape.com/product190/Permacel-P-02-Double-Coated-Kraft-Paper-Tape.aspx Gaffers tape - http://www.findtape.com/category/gaffers-tape-rolls-of-industrial-gaffer-tape.aspx Drill bits for plastic - http://www.mcmaster.com/#plastic-cutting-drill-bits/=vtpc4m

The surface tension of water and the evaporation of ethanol produce an interesting effect in a wineglass known as "tears" or "legs". The process is caused by the Marangoni effect, which explains how toy soap boats work among other interesting things.

The VirtualBench is an all-in-one piece of electronic test gear that combines an oscilloscope, logic analyzer, function generator, DMM, triple output programmable power supply, and an 8-channel digital I/O bus. It can be controlled with a dedicated NI app, or programmatically controlled with LabView or C. I show the device's usage and duggest which situations may benefit from using this device.

Digital Light Processing projectors use a chip that is covered with tiny mirrors that tilt back and forth. When the mirror is tilted one way, it reflects light out through the front of the projector, creating a bright pixel. When the mirror is tilted the other way, the pixel is dark. In this video, I explain how DLP works and show a macro-scale model. Support Applied Science: https://www.patreon.com/AppliedScience Link to mikeselectricstuff http://www.youtube.com/user/mikeselectricstuff

This is a neat little demo that shows how permanent magnets can be used to create propulsion along a conductive copper track

I have a few upcoming projects that require anhydrous ammonia. In this video, I show how to distill it from "ammonia water" similar to common glass cleaner. http://en.wikipedia.org/wiki/Birch_reduction http://www.engineeringtoolbox.com/ammonia-pressure-temperature-d_361.html

Bending wood with ammonia is not really DIY, but I show the process, which is extremely effective. There is also a commercial product that is pre-treated flexible wood, which hardens after being clamped in the desired shape. http://boingboing.net/2011/05/06/inventables.html Hmm, it seems the product may no longer be available -- I can't find it at Inventables. https://www.inventables.com Pre-treated flexible wood product patent: https://www.google.com/patents/US5360631

Support Applied Science on Patreon: https://www.patreon.com/AppliedScience As a follow-up to my previous video on bending wood, I show how ammonia can shrink paper money. The money is dipped into liquid anhydrous ammonia, then dried, and the process is repeated about a dozen times. As the money dries, it shrinks due to the surface tension of the boiling/evaporating ammonia. Video on bending wood: https://www.youtube.com/watch?v=9Z0SsAyHKzc Making aerogel: https://www.youtube.com/watch?v=X24np30GS2o

I explain how a jet of air can float a common screwdriver. Plans to make your own fluid turbulence disc: http://makezine.com/projects/rheoscopic-coffee-table/ Support more Applied Science videos: https://www.patreon.com/AppliedScience Nighthawkinlight's video about floating screwdrivers: https://www.youtube.com/watch?v=fceUcRfbCcQ

I describe how I made a stop motion animation of a phonograph needle in an LP groove using an electron microscope. I also show electron micrographs of other recording media. Support Applied Science: https://www.patreon.com/AppliedScience

Check out the iron-on Applied Science logos and support the channel: https://www.patreon.com/AppliedScience High-res CD, DVD, Blu-ray image: http://benkrasnow.blogspot.com/ Twitter: https://twitter.com/BenKrasnow Digital angle gauge: http://www.amazon.com/Wixey-WR300-Digital-Angle-Gauge/dp/B001PTGBRQ Pipe thread sealants: http://www.mcmaster.com/#pipe-thread-sealants/=xu9uy5 NPT vs NPTF: http://www.cutting-tool-supply.com/TechTips/Tapping/NPTvsNPTF/NPTVsNPTF.htm Surebonder hot glue gun: http://www.amazon.com/Surebonder-PRO2-100-100-Watt-Temperature-Industrial/dp/B006IY359K/ Black hot glue: www.amazon.com/190mm-Length-Soldering-Black-Sticks/dp/B00OKDWWFY/ Magnetic viewer film - http://www.amazon.com/CMS-Magnetics%C2%AE-Green-Magnetic-Viewing/dp/B000UV6ZPS/ Electrical outlet tester: www.amazon.com/Sperry-Instruments-GFI6302-Outlet-Tester/dp/B000RUL2UU/ Tube cutter shears: http://www.mcmaster.com/#3095a16/=xu9sg0 Switch contact burnisher: http://pinballmagic.com/index.php?main_page=product_info&products_id=86 Pin vise for drill chuck: http://www.mcmaster.com/#30505a5/=xu9rna Gray lab coat: http://www.justlabcoats.com/ProductShopping.aspx?scode=RE-KT30CH

This liquid nitrogen generator uses a Stirling-cycle cryocooler that was pulled from a cellular phone tower. It was used to cool a superconducting RF filter that aids cell communications. The cryocooler is able to pump enough heat away from its cold end that air will liquify and drip into a vacuum flask for storage. Jeri's video at Maker Faire 2010: https://www.youtube.com/watch?v=14B8LynojI4 Blog post with more construction details: http://benkrasnow.blogspot.com/2008/08/diy-liquid-nitrogen-generator.html

See how olive oil and magnets can control the brightness of light via the Faraday effect. Get your iron-on Applied Science logo here: https://www.patreon.com/AppliedScience Measure Verdet constant of olive oil: http://www.sestindia.org/wp-content/uploads/2013/12/Volume-2Number-3PP-362-368.pdf Plastic film polarizers: http://www.apioptics.com/linear-polarizers-spec.html Faraday effect: https://en.wikipedia.org/wiki/Faraday_effect

Learn how magneto-optical storage discs work, and see how a focused laser can directly alter a material's optical characteristics. Support Applied Science: https://www.patreon.com/AppliedScience Background sources: http://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=E5B999706AB03703B56466094A7B079B?doi=10.1.1.84.4693&rep=rep1&type=pdf https://books.google.com/books?id=RVqeAGKkesEC&pg=PA387&lpg=PA387&dq=cesb+kerr+rotation+euse+euo&source=bl&ots=_vemqlKPhl&sig=dbloCjnRF6qkDY0eMIR94TpTeTk&hl=en&sa=X&ved=0CCUQ6AEwAWoVChMIw8H2l7idxwIVhqWICh3Y-gov#v=onepage&q=cesb%20kerr%20rotation%20euse%20euo&f=false https://books.google.com/books?id=U57RpAaMKgAC&pg=SA2-PA26&lpg=SA2-PA26&dq=magneto+optical+disc+kerr+gauss+constant&source=bl&ots=l-iqbQtogI&sig=nPqEWFlWYilHKmzo81Sva5LB3Lo&hl=en&sa=X&ved=0CEAQ6AEwBWoVChMIh8vX_YudxwIVyT6ICh06-g3R#v=onepage&q=magneto%20optical%20disc%20kerr%20gauss%20constant&f=false https://books.google.com/books?id=e4ntCAAAQBAJ&pg=PA586&lpg=PA586&dq=kerr+rotation+magneto+optical+storage+layer&source=bl&ots=5zOkDcsIyq&sig=-HBUsD5P4s9954jTEbh-syMTLjc&hl=en&sa=X&ved=0CDoQ6AEwBWoVChMImLrd2ZadxwIVVymICh1yXAIL#v=onepage&q=kerr%20rotation%20magneto%20optical%20storage%20layer&f=false http://www.study-on-line.co.uk/whoami/thesis/chap2.html

This video shows a microcontroller-based image capture system that makes it easier for me to record animations with my scanning electron microscope. Support Applied Science videos: https://www.patreon.com/AppliedScience The diagram in the video is missing equal-valued resistors for the second opamp in the video processing chain. Gain=-1 Teensy firmware: https://drive.google.com/file/d/0B4YXWiqYWB99bHd5ekVjeS1VZDQ/ Processing script for PC image viewing ( not finished!): https://drive.google.com/file/d/0B4YXWiqYWB99TTlBdHI2TFRQS2M The Teensy microcontroller: https://www.pjrc.com/store/teensylc.html

A general overview of cleaning solvents and techniques. Solvent selection and effectiveness: http://www.productionmachining.com/articles/selecting-solvents-for-precision-cleaning Dan Gelbart on coatings and surface cleaning: https://www.youtube.com/watch?v=x7onZGqrYyY https://en.wikipedia.org/wiki/Kauri-butanol_value http://cool.conservation-us.org/coolaic/sg/bpg/annual/v03/bp03-04.html

The 8KJ ruby laser in action! Also, see some other Applied Science projects and what is coming next. NightHawkInLight on youtube: https://www.youtube.com/user/Nighthawkinlight Ben on Embedded.fm: http://embedded.fm/episodes/119 Ruby Laser design process: https://www.youtube.com/watch?v=VSdUQ4oNKiI Cookie Perfection machine: https://www.youtube.com/watch?v=8YEdHjGMeho DIY SEM: https://www.youtube.com/watch?v=VdjYVF4a6iU Support Applied Science on Patreon: https://www.patreon.com/AppliedScience

See how your trusty toothbrush becomes worn out. Special thanks to Harri Lähteenmäki and Johannes S. Zwilling for sending me the smooth zoom footage of the tungsten filament, and showing me how to use After Effects to get a much better effect. I really appreciate it! http://www.videocopilot.net/tutorials/earth_zoom/ Support Applied Science: https://www.patreon.com/AppliedScience Macrophotgraphy with a microscope objective: https://www.youtube.com/watch?v=HVSjUW2qQ6U

Anti-theft tags contain a tiny mechanical oscillator that is activated by a magnetic field. The detectors at a shop's doorway can detect the oscillation magnetically. The tag can be activated and deactivated by magnetizing or demagnetizing it, respectively. Special thanks for your support: Matthew Hill Erik Saathoff Max Loutzenheiser (better credits titlescreen in the next video!) Support Applied Science: https://www.patreon.com/AppliedScience Sources: http://www.metglas.com/products/magnetic_materials/2826mb.asp https://www.google.com/patents/WO1999013442A1?cl=en&dq=magnetostrictive+marker&hl=en&sa=X&ved=0ahUKEwjT8bCCtLLJAhVP9GMKHYThCY8Q6AEIMjAD https://patents.google.com/patent/WO2008032274A2/en?q=magnetostrictive&q=amorphous&q=theft https://www.google.com/patents/US4510489?dq=4,510,489&hl=en&sa=X&ved=0ahUKEwi0x_SosbLJAhVJyWMKHbl_AI4Q6AEIHDAA https://www.google.com/patents/US4298862 https://en.wikipedia.org/wiki/Magnetostriction