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Brent Gaskey
Works at Lebanon Fire District
Attended Chemeketa College


Brent Gaskey

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Well, with all the hippies around here, Oregon is quickly becoming the third world...

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Pretty cool.
Kids, don't try this at home: it's almost certainly not a good idea. But for those of you who are interested in physics, note several important points:

(1) The rocket fires under water: that works because it's a true rocket, carrying both fuel and oxidizer on board and not using air at all. The shape of the nozzle is also important, since water has an amazing ability to absorb heat and thus quench combustion; a caul around the nozzle keeps the water from getting at the ignition point from the sides.

(2) The primary explosion creates a roughly circular set of cracks. Those lead to "big" cracks opening up in the ice, as existing seams and weaknesses get expanded. 

(3) Note that the circular cracks become hexagonal (matching the big cracks) as you move outwards. What's happening is that the inner cracks happen first, and then those start the big cracks, which actually spread faster than the round ones, basically moving at the speed of sound in ice. By the time the last round cracks are forming, they're forming in ice that already has hexagonal cracks in it.

(4) Water is an incompressible fluid, which means that the shock waves are going to hit things under water very, very hard. This is likely to be lethal to anything underwater and nearby, and is how dynamite fishing works. The reasons why that's a terrible idea (and is therefore illegal nearly everywhere) are hopefully obvious.

(5) That said, watching things explode underwater is pretty cool.

h/t +Kee Hinckley 
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See, my takeaway on this is that my characters need to start carrying bottle rockets so that if we ever fight anyone and they are standing on a frozen lake, I can say, "don't worry, I got this," and I can use this video to prove it  would work.
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Liking this.
new continuous 3D printer does away with the layers completely, being able to print 25-100 times faster the same objects a normal printer does. A platform draws the object continuously out of a bath of liquid resin like in Terminator 2 :)  ►

The technology, called Continuous Liquid Interface Production (CLIP) manipulates light and oxygen to fuse objects in liquid media, creating the first 3D printing process that uses tunable photochemistry instead of the layer-by-layer approach that has defined the technology for decades.

It works by projecting beams of light through an oxygen-permeable window into a liquid resin.

Working in tandem, light and oxygen control the solidification of the resin, creating commercially viable objects that can have feature sizes below 20 microns, or less than one-quarter of the width of a piece of paper.

If you want more data, has the original research. 
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I've been needing a new skin remover for some time!

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I don't know if this is okay to post here, but we have two bills passing through the Oregon legislature as we speak, that were drafted and paid for by Grabby Gabby, and Bloomberg. Any help would be appreciated. 
John Thrasher's profile photoBrent Gaskey's profile photoKeith Locke's profile photoDirk Willden (daknife)'s profile photo
+Steve Berry further being predominantly Liberal means nothing. Vermont is very Liberal. Liberal does not equal anti-gun.
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Personally I enjoy the Manly Manners. 
But why on Earth would you ever invite the State on your property, and to introduce beavers no less? Both are destructive, the former more than the latter.

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Week Is Over!: Time To Release Pressure!
Join the Simple Science and Interesting Things Community and share interesting stuff!

Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure)[a][not in citation given] is the pressure relative to the local atmospheric or ambient pressure
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Five fantasy novels with horses as characters, curated by Patricia Briggs.
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What about using this for churning butter?
Engineer/Paramedic/Hazmat Technician
NREMT - Paramedic, Hazardous Materials Technician, NFPA Swift Water Rescue Technician, Rope Rescue Technician, MSA SCBA Technician
  • Lebanon Fire District
    Engineer/Medic, 1996 - present
Basic Information
Other names
  • Chemeketa College
    AAS Paramedicine, 2011 - 2013
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