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NRC Approves New Nuclear Reactor Design

Omniscient Lurker Re:Progress (299 comments)

> *induced* fission

Engineers commonly use fission to refer to induced fission and decay to refer to spontaneous decay. I was merely commenting because AK Marc is (self-admittedly) using dictionary definitions and not the definitions that engineers use. The goal of my comment to was clarify what engineers mean when the say fission.

more than 2 years ago
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NRC Approves New Nuclear Reactor Design

Omniscient Lurker Re:Progress (299 comments)

Nuclear Engineering (student) here.

>The decay was an atom splitting into two smaller atoms and energy, which is fission.

Fission in the context of engineering refers to the use of neutrons to force atoms to split, not to naturally decaying isotopes.

>The question was of why would fukishima need active cooling when passive cooling is so "easy" to do.

Because it wasn't designed to use passive cooling. Passive cooling requires your reactor to be designed to facilitate it (all gen 3+ are designed like thisâ"I believe the NRC refuses to certify anything that is nonpassive). Passive cooling refers to not requiring power to run the coolant pumps or anything. The AP1000 is designed to using convection of steam inside the containment building to cool the reactor.

more than 2 years ago
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FCC To Test Opening White Spaces Up To Public

Omniscient Lurker Re:50km? (68 comments)

That analogy makes no sense.

more than 2 years ago
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FCC To Test Opening White Spaces Up To Public

Omniscient Lurker Re:50km? (68 comments)

If you are limiting the owner's bandwidth it is stealing. The "stealing" analogy only applies to everything beyond to router. Which if the owner pays by the (giga)byte does remove resources he paid for.

more than 2 years ago
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FCC To Test Opening White Spaces Up To Public

Omniscient Lurker Re:50km? (68 comments)

If you get a way to search through the ssids, yes. Think of the free internet possibilities. No longer does there need to be one technologically challenged person on your street, no you just need one in the city.

Joking obviously. Don't steal wifi; it messes up the owner's ability to stream porn.

more than 2 years ago
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Radio Energy Harvested With Inkjet-Printed Antenna

Omniscient Lurker Re:Big numbers (164 comments)

Joke all you want. But a group in one of my engineering classes did this and we were received better than the group that did: .00something watts.

I guess marketing is easy.

more than 2 years ago
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Millions of Jellyfish Invade Nuclear Reactors

Omniscient Lurker Re:Sea water for cooling? (280 comments)

The Shimane Nuclear Power Plant is a Boiling water reactor. This means it has two water loops in it. One is boiled by the reactor and turns a turbine. A second (probably from the sea in this case) is used to condense that steam and recycle it through the reactor. For any heat based power generation you need a final heat sink, usually the atmosphere (cooling towers) or a body of water for nuclear power plants; coal plants usually have an entirely open system and just go water source to air.

Most of Japan uses BWRs. https://secure.wikimedia.org/wikipedia/en/wiki/Boiling_Water_Reactor

(I am a Nuclear Engineering Student)

about 3 years ago
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Highly Directional Terahertz Laser Demonstrated

Omniscient Lurker Re:PSA (125 comments)

And sonar, and scuba. Any others?

more than 3 years ago
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TI Calculator DRM Defeated

Omniscient Lurker Re:what (234 comments)

Easiest solution: make people show their work. Yeah test givers have to work to grade them, but it would probably give a more accurate score.

more than 3 years ago
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Average Cellphone Data Usage Is 145.8 MB Per Month

Omniscient Lurker Re:Standard deviation (107 comments)

Does your phone default to the usually free and open wifi in airports?

more than 3 years ago
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Electric Cars Won't Strain the Power Grid

Omniscient Lurker Re:No problem, long as they charge at night (438 comments)

Most companies don't scale back nuclear at all for that reason (and it is the cheapest once the reactor is built)

about 4 years ago
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MA High School Forces All Students To Buy MacBooks

Omniscient Lurker Re:Don't let reality get in the way of your anger (1217 comments)

Every high school math teacher I've ever had maintained a collection of 15 or so TI-83s for the people who didn't buy a calculator, paid by the school. Of course Precalc and Calc were no calculators period.

more than 4 years ago
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Federal Court Issues Permanent Injunction For Isohunt

Omniscient Lurker Re:I hear Wildcard Studios just licensed their wor (212 comments)

I always thought the Streisand Effect was where attempts to censor/hide something brought more attention to it, in this case RIAA lawsuit increasing public awareness and use of bittorrent. This is more in lines with John Gilmore's quote, "The Internet interprets censorship as damage and routes around it." It is impossible to stop something on the Internet.

more than 4 years ago
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Volcano Futures

Omniscient Lurker Re:.OGG (284 comments)

And for me to play those I have to install codecs. Am I worth less than you?

more than 4 years ago
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3rd Grader Accused of Hacking Schools' Computer System

Omniscient Lurker Re:Blackboard XSS (344 comments)

You can get Admin in blackboard by running some javascript on your computer. Authentication is done client side via javascript.

more than 4 years ago
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Mexico Will Shut Down 25.9 Million Cell Phones

Omniscient Lurker Re:Does anyone actually belive this would work? (370 comments)

More likely beige boxing will become more common. Why bother with cellphones, just plug into the lines of any nearby building.

more than 4 years ago
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Nintendo Developing DS Apps For School Systems

Omniscient Lurker Re:Mario teaches typing (40 comments)

If everyone could type then the large supply of labor would drive the salary of type heavy occupations down.

more than 4 years ago
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Maori Legend of Man-Eating Birds is True

Omniscient Lurker Re:so... (338 comments)

Europeans have lots of pictures of dragons, we won't believe them til we find bones.

more than 4 years ago

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