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User: burhop

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  1. Only 1% speed of light? That sucks! on Astronomers Find Star Orbiting a Black Hole At 1 Percent the Speed of Light (sciencealert.com) · · Score: 1

    I was thinking, "this is great! I can go hang out there for a few days and come back to Earth years from now".

    Unfortunately, 1% only gives a time dilation of about 1.01

        t' = t/sqrt(1 -v2/c2)

    Really, you have to get to well over 90% the speed of light if you want Trump's presidency to be over in a few hours.

  2. Re:we can't even be bothered to get that right.... on SpaceX Plans To Send Two People Around the Moon In 2018 (gizmodo.com) · · Score: 1

    I'm going to go way out on a limb here and postulate that a trip AROUND the moon is going to be something more than 477,000 miles.

    I think you identified the wrong problem. "Around the moon" is fine with 300,000 to 400,000. It is the "loop back" part that is the issue.

    (Maybe they just stop when they get around the moon and wait for the Earth to swing by and pick them up?)

  3. I'm not sure who is going to like this better... on UPS Develops 'Rolling Warehouse' System In Which Drones Are Launched From Atop Trucks (bloomberg.com) · · Score: 3, Interesting

    ... the UPS driver than gets to try to drop boxes on my barking dog or my dog that might catch his first drone.

    Really, if they start doing this in my neighborhood, I'll be ordering a dog bone a day on Amazon.

  4. I hope they bring back blinking text too on Facebook To Autoplay Videos With Sound On By Default (androidandme.com) · · Score: 1

    I'd also like them to update their UI to include more HTML tables, note areas they are working on with "Under Construction" animated GIFs and include a hit counter, preferably in a cartoon font, so everyone knows how popular my page is.

  5. Beer of the past was sweeter? on How Beer Brewed 5,000 Years Ago In China Tastes Today (thestreet.com) · · Score: 2

    ' The beer "looked like porridge and tasted sweeter and fruitier than the clear, bitter beers of today," '

    Do you know how many types of beers there are today? Just go to any local microbrewery (well, maybe not in Germany- beer purity laws and all) and you will find 3-10 very different beers that are completely different from the next microbrewery.

    So, someone 5000 years from now finds a beer recipe from some "ancient" brewery and concludes all our beer tastes like PBR (Pabst Blue Ribbon).

    (OK, a little beer porridge might be fun to try)

  6. is it "Boring" or Boaring"... on Next Big Thing From Elon Musk? It Could Be 'Boring' (usatoday.com) · · Score: 2

    ...because I kind of thought he might be going off to Georgia to hunt one of those giant boars they show all the time on Youtube. It seems like something rich people would do.

  7. Re:I'm missing something. Leap seconds .. on Earth's Day Lengthens By Two Milliseconds a Century, Astronomers Find (theguardian.com) · · Score: 3, Informative

    The article says 2 milliseconds per century, but we've already added 27 leap seconds since 1972 ..

    So, what am I missing..?

    Leap seconds (and leap years) are due to the number of rotations of the earth in a year not being exactly 365. If you think about it, why would they be. There is no reason the earth should rotate exactly 365 time in one trip around the sun. So, to keep December from gradually creeping into the summer, we have to fiddle a bit with the calendar.

    In this case, we are just talking about the rotation speed of the earth. In a closed system, the rotation speed can be changed by moving the mass around the Earth, such as from the equator to the poles or from the the earth surface to under the surface. Changing the shape of the Earth is essentially the same as moving the mass around so would also affect speed (going from sphere to pair shape to ellipsoid).

    Since we don't live in a closed system (e.g. the moon is out there), one can also change the earths rotation speed by adding (or in our case with the moon) taking away momentum. So this also affects the rotation speed.

  8. Translation for scientists and enginers on Earth's Day Lengthens By Two Milliseconds a Century, Astronomers Find (theguardian.com) · · Score: 1

    "The split second gained since the first world war may not seem much, but the time it takes for a sunbeam to travel 600km towards Earth can cost an Olympic gold medal, "

    What he/she said was, "Being second by a small amount of time will cause you to not be first"

    I'm pretty sure being second by any amount of time, large or small, will cause you to not be first too.

  9. The news is about a cube root, not a square root.

    While you are right that the cube root is interesting, the Sieve of Eratosthenes is a different algorithm. Historically, you need an array of bits, with each bit set if it is the second bit after 2, the third bit after 3, the 5th bit after 5, etc. It is WAY faster than testing each number with the factors from 2 to the square root of the number.

    As I understood it, rather than needing 1000 bits for the first 1000 numbers, you need cuberoot(1000) bits or 10 bits. They also say 1/5 the bits - so maybe someone can clarify that or post a better link.

    (yeah, you can optimize a bit by ignoring the even numbers and so on but its still doesn't get you close to the cube root of memory).

  10. Where was this for my 1984 Science fair? on Researcher Modifies Sieve of Eratosthenes To Work With Less Physical Memory Space (scientificamerican.com) · · Score: 4, Interesting

    Seriously. I got a scholarship using a TRS80 and the Sieve of Eratosthenes.

  11. Some of you all are still running on Outdated info on 4K UHD TVs Are Being Adopted Faster Than HDTVs (venturebeat.com) · · Score: 1

    Time to leave 2014 behind.

    4K TVs are expensive - Nope - My 60 in 4K was under $1000 8 months ago.

    There is no content - Au contraire - Netflix and Amazon are serving it out nicely.

    You can't see the difference with 1080p - I'm sorry your living space doesn't allow for a TV larger than 32 inches.

    Now, to be fair, I did check out the 8K TVs at CES and we may have already passed a useful maximum resolution. I can't tell a 60in 8K from a 4K when I'm a few feet away. I don't think the OCD market of people with 20/10 vision is going to be too big for 8k.

  12. Re:Can I see? on Facebook Knows Your Political Preferences (businessinsider.com) · · Score: 1

    I'd like to see what they say about me.

    According to the article, you can go to Facebook preferences here: https://www.facebook.com/ads/p... (log in first)

    The look at the Lifestyle and Culture, then look at US Politics.

    My category was wrong (unless Facebook knows me better than I know myself :-( gasp! )

  13. Factors That suggest Political Preference on Facebook Knows Your Political Preferences (businessinsider.com) · · Score: 2

    I'm a fiscally conservative, social moderate who hates Obama, has multiple openly gay friends, and generally votes libertarian when possible. Good luck categorizing that!

    It is possible to predict political preferences beyond looking at what you say about some of the defining issues. Your biology has been shown to be linked to your affiliations: https://en.wikipedia.org/wiki/... Also this study http://www.smithsonianmag.com/...

    And then there is what you eat. http://www.livescience.com/143...

    Or how smart you are. http://www.dailymail.co.uk/sci...

    Having said that, in the end, they are probably just counting how many Trump photos have been posted by the account.

  14. Re:What happended to slashdot? on All Windows 10 PCs Will Support HoloLens Next Year (theverge.com) · · Score: 1

    Everyone is too busy telling everyone else to get off their lawn.

    Don't worry. WIth Hololens, it will be a virtual lawn that overlays all horizontal surfaces. It will be an environment of bliss like was foreseen revisions ago and recorded in the book of Wiki.

    Just like this but in 3D -> https://en.wikipedia.org/wiki/...

  15. Re: At her disposal on All Windows 10 PCs Will Support HoloLens Next Year (theverge.com) · · Score: 1

    They, referring to a singular person of any gender has been in use for more than 500 years, not 50, but fell out of fashion officially in the nineteenth century with its obsession with trying to make English more pure like Latin.

    Which is funny given how English has evolved by taking pieces of everyone else's language https://en.wikipedia.org/wiki/...

    English is the most promiscuous language I know of :-)

  16. Re:Can someone hack the Dodge Charger next? on A New Wireless Hack Can Unlock Almost Every Volkswagen Sold Since 1995 (arstechnica.com) · · Score: 1

    My key fob broke and Dodge wants several hundred dollars to replace it with a new one.

    So you car still starts, but no keyless entry?
    You should be able to get cheap generic fobs and receiver, and wire it to the unlock button inside your car.

    Weekend project! Whoo hooo!

  17. Can someone hack the Dodge Charger next? on A New Wireless Hack Can Unlock Almost Every Volkswagen Sold Since 1995 (arstechnica.com) · · Score: 4, Funny

    My key fob broke and Dodge wants several hundred dollars to replace it with a new one.

    Plus, it would be way cooler to walk around with a Raspberry Pi on my keychain that opens my car, everyone else car, and turns down the radio of the car parked next to me at a red light.

  18. Re:how do I on NASA Awards Companies $65 Million To Develop Habitats For Deep Space (techcrunch.com) · · Score: 3, Informative

    Secure funding from NASA, how do I learn about the opportunity to secure funding, I am sure they advertise it somewhere, and have all sorts of guidelines, but it seems as if they send out invitations only, because it's only the same companies who ever get funding. I think the process to secure government money needs to be more accessible, and not hidden in bureaucracy only a select few can navigate to.

    Just because it doesn't show up on your Facebook page doesn't mean it it is hidden in bureaucracy. If you have an idea for NASA, here you go:

    https://prod.nais.nasa.gov/pub...

    If you are just looking for money, here you go:

    http://www.grants.gov/

    The same companies seem to get chosen over and over is because they usually have some expertise in that particular area and can show a good reason why NASA should spend the money with them. Yeah, it helps to know the system but they bend over backward to make it transparent.

  19. Hahaha! I'm protected from this by Windows 7! on Chrome Is Nearly Ready To Talk To Your Bluetooth Devices (engadget.com) · · Score: 1

    OK, "protected" is maybe not the right word. Microsoft is just not providing support for Bluetooth LE (GATT) prior to Windows 8. I'm assuming Chrome won't be providing their own BT stack.

  20. Re:Not causation and all that on Positive Link Between Video Games and Academic Performance, Study Suggests (theguardian.com) · · Score: 2, Insightful

    While I’m sure that playing problem-solving games hones problem solving skills, just making your kids play games isn’t going to make them math geniuses. In fact, for most kids, it would probably just make them waste time. Rather, it is an instinctive interest in puzzles that makes some people interested in games *and* STEM subjects.

    And this link is going to just be statistical. I do computer engineering, and I have side interests in math, physics, linguistics, etc. But I really don’t like most video games. My wife has degrees in english, history, and law, and she kicks my butt at every game we play.

    You are right, of course. Making your kids play video games may or may not make them smarter.

    What I think is the important part is that letting your kids play video games will not make them stupid (on average).

  21. I was going to read this article... on New Attack Steals SSNs, E-mail Addresses, and More From HTTPS Pages (arstechnica.com) · · Score: 2

    ... but the intro made me afraid to click the link.

  22. Unit Conversion For Brightness on Class of Large But Very Dim Galaxies Discovered (nature.com) · · Score: 1

    As an engineer, I have to do a lot of unit conversion.

    Anyone know how many Kalamazoos are in a London?

    And couldn't we just stick with SI units like the Paris?

  23. Ah... you are right. Like you pointed out, the second goes up later.

  24. One of the interesting things in this trip are a couple of Space adapters that will let Boeing's CST-100 Starliner, SpaceX's Crew Dragon
    spacecraft, and anyone else that comes along to dock to the station.

    http://www.theverge.com/2016/7...

    No word yet on if Apple will follow this standard or come up with their own.

  25. Can someone photoshop me next to this pokemon? on Pokemon Game Adds $7.5 Billion To Nintendo Market Value In Two Days (reuters.com) · · Score: 1

    I bet there will be some good memes coming...