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User: cherylchase

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  1. Re:Even More Simple on Ask Slashdot: What Would Happen If a Hyperloop Train Failed? · · Score: 1

    Your characterization of airplane crashes as being unsurvivable is incorrect. "since 1983, more than 95% of the passengers survived", says National Transportation Safety Board. https://www.ntsb.gov/news/pres...

  2. by no means the first space-based observatory on The Future of Astronomy: NASA's James Webb Space Telescope · · Score: 1
  3. Theory X, Theory Y on Ask Slashdot: What Books Have Had a Significant Impact On Your Life? · · Score: 1
  4. half qwerty/mirror image keyboard on Ask Slashdot: Single-Handed Keyboard Options For Coding? · · Score: 1

    I had this problem when I broke my wrist. It turns out that it is pretty easy for your brain to learn to type one-handed if you simply use a special shift key to make each half of your keyboard be a mirror image of the other half. This can be accomplished in software, using the space key as the special shift, but there is a patent on the technique, and software drivers that used to be available are gone. You'll learn this way faster than any of the chorded keyboards. I have found the Matias Keyboard, which implements this technique in a hardware keyboard, to be a great solution. It's not cheap, but it works. http://www.matias.ca/halfkeyboard/index.php?refID=7

  5. Used scopes on Oscilloscopes For Modern Engineers? · · Score: 1

    Depends upon what you want to measure, especially the frequency. I would start with a search for used equipment at HSC (http://www.halted.com).

  6. Re:How does this help? on Truckers Choose Hydrogen Power · · Score: 1

    Exactly. And that means that you would get more fuel efficiency by allowing the alternator to run without an electrical load. If you load the alternator to drive hydrolysis to generate hydrogen, then you consume more energy (to drive then alternator) than you produce (to generate the hydrogen). It's basic physics. Each conversion process (engine kinetc energy to electicity via alternator; electicity to hydrogen via hydrolysis; hydrogen to engine kinetic energy via combustion) is inefficeint -- probably under 50%. So the whole gizmo should reduce overall fuel efficiency, not increase it. You can't increase the efficiency unless you convert some energy which would *otherwise be wasted* into hydrogen. That's why a hybrid combustion/electric engine works. It converts the kinetic energy of braking/deceleration (which would otherwise be wasted as heat) into electricity. But a combustion engine's alternator just sucks kinetic energy that was otherwise destined to drive the vehicle forward.

  7. clarifies pricing for tax prep services on CA State Offers To Prepare Simple Tax Returns · · Score: 1

    Actually, I think this has the potential to clarify pricing for tax preparation services. For folks who just can't deal with preparing their own taxes, this offers a minimum tax refund. Why shouldn't there be tax prep services that offer a complete package with pricing based on difference of the refund they justify vs. the refund offered by the state-prepared tax return?

  8. Bay Model on A Geek's Tour Of North America? · · Score: 1
    The Bay Model (in Sausalito) is a three-dimensional hydraulic model of the San Francisco and Delta areas capable of simulating tides, currents and river inflows. The Model is over 1.5 acres in size and represents an area from the Pacific Ocean to Sacramento and Stockton including the San Francisco, San Pablo and Suisun Bays, and a portion of the San Joaquin Delta. Time scale is 100x faster than nature. The National Park Service administers visits to this working laboratory.

    See Bay Model Visitor Center

  9. "I didn't change anything, I swear" on Family Tech Support · · Score: 1

    I installed a router for a friend who, unfortunately, had subscribed to SBC DSL (pppoe). She was very pleased with her new LAN and wireless access. Then one day she insists that I drop everything and come over to fix her internet access. "I didn't change anything, I swear." Turns out that she had mistakenly unplugged LAN cables, then called SBC tech support. They followed their standard procedure, which is to change the customer's password to "abc123". I plugged back in the LAN cables, but the password I had programmed into the router was now invalid. Who would guess that the user had changed the password, when she never has a chance to get involved in the login process?