Control light with heat and magnets (Magneto-optical Kerr effect)

Learn how magneto-optical storage discs work, and see how a focused laser can directly alter a material's optical characteristics.

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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

Control light with magnets and olive oil?! (Faraday effect)

See how olive oil and magnets can control the brightness of light via the Faraday effect.
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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

Liquid Nitrogen Generator - Overview

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

Tools and Tips #2 from Applied Science

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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

Support Applied Science on Patron, and receive your own iron-on logo

I'd like to thank my Pateron supporters by offering a reward for those who donate at the $3/video level or higher.  I'll send you an iron-on Applied Science logo that you can apply to your own lab coat or other clothing.

https://www.patreon.com/AppliedScience