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  1. Re:freezing water on How Ice Melts · · Score: 5, Informative
    It depends on the fluid's temperature....

    Source

    Dear Cecil:

    I have a friend who insists that filling an ice cube tray with warm water will cause the cubes to form more quickly than they would if you started with cold water. He said it had something to do with the air circulation around the trays being affected by the temperature.

    Not knowing much about frigidity myself, but being contrary, not to mention skeptical, by nature, I expressed doubt. Cecil, was I right, or is there indeed some basis in fact for this foolishness? --Mary M.Q.C., Santa Barbarba, California

    Cecil replies:

    You were smart to let me handle this, Mary. God knows what would happen if you tried to experiment with ice cubes on your own.

    Needless to say, I conducted my research in the calm and systematic manner that has long been the trademark of Straight Dope Labs. First, I finished off a half a pint of Haagen-Dazs I found in the fridge, in order to keep my brain supplied with vital nutrients.

    Then I carefully measured a whole passel of water into the Straight Dope tea kettle and boiled it for about five minutes. This was so I could compare the freezing rate of boiled H20 with that of regular hot water from the tap. (Somehow I had the idea that water that had been boiled would freeze faster.)

    Finally I put equal quantities of each type into trays in the freezer, checked the temp (125 degrees Fahrenheit all around), and sat back to wait, timing the process with my brand new Swatch watch, whose precision and smart styling have made it the number one choice of scientists the world over.

    I subsequently did the same with two trays of cold water, which had been chilled down to a starting temperature of 38 degrees.

    The results? The cold water froze about 10 or 15 minutes faster than the hot water, and there was no detectable difference between the boiled water and the other kind. Another old wives' tale thus emphatically bites the dust. Science marches on.

    AN ANOMALOUS SITUATION ARISES

    Dear Cecil:

    Just a few days after I read your column on whether hot water freezes faster than cold water (you said it didn't), I happened to come across an article in Scientific American entitled "Hot Water Freezes Faster Than Cold Water. Why Does It Do So?" What gives? I hope we will see another column soon resolving the issue. --Ellen C., Chicago

    Dear Ellen:

    I know it must unnerve you to find that a supposedly infallible source of wisdom can make mistakes, so let me hasten to reassure you: Scientific American did not screw up. My results and theirs (specifically, those of Jearl Walker, author of SA's "Amateur Scientist" column) are consistent--we were just working in different temperature ranges.

    I found that cold water (38 degrees Fahrenheit) froze faster than hot water out of the tap (125 degrees F). I chose these two temperatures because (1) they were pretty much what the average amateur ice-cube maker would have readily available and (2) I couldn't find a mercury thermometer that went higher than 125 degrees.

    Jearl, who is not afflicted with penny-pinching editors like some of the rest of us, was able to get his mitts on a thermocouple that could measure as high as the boiling point, 212 degrees F. He found that water heated to, say, 195 degrees would freeze three to ten minutes faster than water at 140-175 degrees. (There were differences depending on how much water was used, where the thermocouple was placed, and so on.)

    Jearl suggested that the most likely explanation for this was evaporation: when water cools down from near boiling to the freezing point, as much as 16 percent evaporates away, compared to 7 percent for water at 160 degrees. The smaller the amount of water, of course, the faster it freezes.

    In addition, the water vapor carries away a certain amount of heat. To test this theory

  2. Re:Anti-Cold on How Ice Melts · · Score: 1, Funny

    That's because Celsius was defined with water in mind.


    The Celsius temperature scale was designed so that the freezing point of water is 0 degrees, and the boiling point is 100 degrees at standard atmospheric pressure.


    So yah, there is a relationship- ( x1 - x2 )/ 100 :)

    Unless, of course, this is a work of sarcasm.

  3. Re:Wow.. on Grizzly-sized Catfish Caught in Thailand · · Score: 1

    "It's amazing to think that giants like this still swim in some of the world's rivers," Not anymore

  4. ahh the possibilities.... on .tel Coming Soon · · Score: 1

    I got sue by Intel for using in.tel .

  5. Obvious question on Vein Patterns to Verify Identity · · Score: 1

    What if I don't have fingers you insensitive clod!

    Or blood, or vein, or whatever

    Seriously I wonder how good the scanning is- some people's fingers have a layer of crust(skin, due to labour work such as farming or handling) that is pretty tough. Could the device scan through a layer of hardden skin?

  6. huh? on Our Brains Don't Work Like Computers · · Score: 1, Informative

    Like them, we can do several things 'simultaneously' with our 'processors.'

    How so? Last time I checked 'computer brain' (cpu) cannot do multiple operations at the same time, unless you have dual core/cpus.

    CPU just switch from one task to the other at break neck speed (yes I am ignoring pipelines and branch prediction - they are only use in streamlining the operations).

    Human brain work the same way- it may be able to take in multiple informations (sight, feel, sound, smell) at the same time, but human brain has adapted a "filtering" system for unimportant sensor input. Thus you cannot say human brain does parallelistic operations at the same time.

  7. ops on Commission Says NASA Failed on Shuttle Safety · · Score: 0

    there goes the launching plan...goes up in smoke and bang just like the object that it suppose to protect.

    Honestly, the commission is "picking bones out of an egg sheel"-
    Even a car, with its four wheels firmly on the ground, would have its share of safety problem when it is 25 years old. Let alone a plane size transporter that goes into Mach15, +3000 degrees, vaccum, rain/storm/win/cyclone for every year or two.

    sooner or later something is bound to break.

    The current shuttles are doom- only a newly made shuttle(with the original design) can withstand the impossiblely high safety standard.

  8. Re:Down with neologisms on The Ham and Spam of Weblogs · · Score: 1

    a linear log of rambling bullshit

    Yah Slashdot articles and posts tend to bs that way...You are not talking about/.? Opps nevermind then ^_^|| .

  9. OMG on AI Researchers Produce New Kind of PC Game · · Score: 1

    If it is anything like David Lightman little game with WOPR's Joshua then I am out of planet earth with the next shuttle flight.

  10. The electric worker *tried* to steal the cable on Rats 'Cripple' NZ Web Access · · Score: 1

    Ok first thing first

    1. The accident(or incident) happened at Monday, and /. , being famous as it is, post the "News" on Friday. Good job, even the Inquirer beat you.

    2. That being said, here is a much more detail account of the event.

    Rat blamed for latest Telecom blackout

    untitled image

    21.06.05

    By Bernard Orsman and Gareth Vaughan

    A rat is suspected as being one of two culprits who paralysed the country's telecoms network yesterday, closing the Stock Exchange and stopping shoppers using Eftpos machines.

    The second was a Powerco contractor who "nicked" a fibre optic cable near Waverley in South Taranaki while drilling a hole to replace a power pole at 10.40am.
    The "one in a million" coincidence of damage to two fibre optic cables affected more than 100,000 Telecom customers from 10.48am until 3.18pm.

    The greatest disruption was in Wellington and Taranaki. Services were also lost in Auckland, Palmerston North and in the South Island.

    Trading on the Stock Exchange was brought to a halt from 11.01am until 4pm. The exchange stayed open for an extra 30 minutes until 5.30pm.

    Eftpos disruption hurt shoppers and retailers. The online auction site TradeMe reported a significant reduction in traffic between 11am and 3pm.

    Air travellers experienced delays of 25 minutes or more when the loss of internet and email forced Air NZ to manually check-in passengers.

    Telecom spokesman John Goulter said it was possible a rat was the cause of the broken fibre optic cable on a railway bridge, about 5km north of Upper Hutt. Rodent damage was a problem inside the 10cm steel ducts that carry fibre optic cables, he said.

    "We haven't ruled it [a rat] out."

    Another possible cause was the cable coming adrift and being carried away in the river.

    Mr Goulter said the odds of the two main fibre optic cables running up the west and east sides of the North Island failing at the same time were about one in a million.

    Telecommunications Users Association chief executive Ernie Newman said Telecom rated well for network and service reliability and he did not see it as a sign of a trend.

    However, brokers were annoyed, especially as it was the second Telecom fault in a week to halt trading.

    One broker said stoppages added to uncertainty for the market and investors "hate uncertainty".

    Stock Exchange spokeswoman Rowan MacRae would not be drawn into detail about compensation.

    "Our key thing has been to focus on getting the market back up and running as quick as we can and to let international markets know what has happened here today. We will worry about the other issues later."

    Retailers Association Auckland regional manager Russell Sinclair said given that many people no longer carried cash, "It certainly bites" when Eftpos went down.

    Communications Minister David Cunliffe said "getting two accidents of this type at the same time is a freak occurrence".

    Last week about 2000 Telecom customers were affected when a contractor accidentally cut a cable between Waihi and Whangamata. The eastern side of the Coromandel Peninsula and Great Barrier Island were affected.


    Wow, what a dumbass for stealing "a shiny cable" that is under the ground. Wouldn't he , you know, know that the line might be there for a reason?

  11. Something will never change on USPTO Rejects SBC Browser Patent · · Score: 3, Insightful

    Pattent System
    by spooje on Wednesday November 12, @10:01AM (#7453079)

    Great now if we can just get the USPTO to review the entire pattent process we should be all set.


    It is sad that after 1 1/2 year, we are still talking about reforming the patent system, instead of actually doing something.

  12. Use the dog as a camara on Sony Aibo Hacks Increase Functionality · · Score: 0, Troll

    Use a ZipIt handheld device to view through the eyes of your AIBO at all times.

    Forget Sony's infrared V8 or hidden camara phone, THIS is the ultimate tool of peeping!!

    Imagine, when those unsuspecting ladies pick the trojan^H^H^H^H^H^Hrobot up and hold it to their chest, you, as an elite geek, is seeing the first hand (ok second hand) look of their boobs.
    Or rather, if you like, you could have the camara^H^H^H^H^H^Hdog hump a lady and direct it to look up. The lass would be too daze to know your cunning scheme.

    The possibility is endless ;) /joke

  13. so, on Opera: Firefox User Figures 'Inflated' · · Score: 1

    how does the salt water in North Atlantic tastes like?

  14. The real reason for the release on Apple Moves to All Dual-Processor Power Mac Lineup · · Score: 1

    By no mean this is true- it is just a logical conclusion.

    A few of the people had gotten dangerously close to the real reason without actually hitting it.

    There are couple of reasons, and they are somewhat related to each other.

    1. Clear out inventories - Probably true to some degree, but remember, there are still 9 months of PowerPC Mac left. You don't start clearing out every single product 9 months before you abandon it.

    2. To allow existing PowerPC users/companies to upgrade - this is a much more logical reason. Remember, most of the existing companies use PowerPC-base softwares for heavy duty work (rendering etc.). They don't have the time nor money to create a new set of tools- they want to use their current tools for as long as possible. These new and fast PowerPC provides just the solution - they are among the last PPC Mac on the market; when MacTel takes over, should they then decide to upgrade their slow G3-G4, they would need to buy new hardware AND new softwares. However if they just get the fastest PPC Mac today, these hardwares/softwares could potentially last them quite a few years. This saves time and money with the freedom to switch to Intel whenever they want.

    They are aiming at professionals who don't want to abandon their PPC softwares for years to come.

  15. Re:Working from an island on Mauritius Aims To Be First Wireless Nation · · Score: 1

    living in a small community of techno-geeks

    Sounds more like a nightmare to me ;) .

    hot tourists

    To see the geek gehtto? XD

    I guess I would go...if they promise me that tsunami would never reach the island.

  16. Re:the glass was of even higher quality than theor on Glass In Spaaaaace · · Score: 1

    Glass fibers are fairly resistant to vibration.
    Not when you put them next to each other- they would, you know, BANG into each other? That's why I said "large bunch", silly.

    There are other ways to microgravity...
    They said that it is one of the advantage of developing the technology "in space".

  17. the glass was of even higher quality than theory on Glass In Spaaaaace · · Score: 1

    Right

    And tell me, genius, how would you secure a large batch of finish glasswares when you are dropping down the outer atmosphere at Mach18 velocity.

    Last time I checked, the shuttle produces
    quite a bit of vibration. How are you going to cushion it, boxes of Kleenix?

  18. but isn't it the thought that counts? on Amazon's Special Thank-You · · Score: 1

    No

    If I want to see the damn concert I would download the bootleg file on bittorrent. :)

    /sacasam

    You never know...people on /. are not known for their sense of humor...

  19. In case u've been living in a cave for past 5 year on All Your Base Are Turned Five · · Score: 5, Informative

    all your base are belong to us

    In A.D. 2101
    War was beginning.
    Captain: What happen ?
    Mechanic: Somebody set up us the bomb.
    Operator: We get signal.
    Captain: What !
    Operator: Main screen turn on.
    Captain: It's You !!
    Cats: How are you gentlemen !!
    Cats: All your base are belong to us.
    Cats: You are on the way to destruction.
    Captain: What you say !!
    Cats: You have no chance to survive make your time.
    Cats: HA HA HA HA ....
    Captain: Take off every 'zig' !!
    Captain: You know what you doing.
    Captain: Move 'zig'.
    Captain: For great justice.


    I remember the day that I saw the flash movie (on gaming force I think)- it literally dropped me to the floor.

    Time sure goes fast...Or am I just getting too old for my own good?

  20. Interesting model on New Model Solves Grandfather Paradox · · Score: 1

    Basically if I want to kill a person,

    I would have to not know he is alive at current time plane.
    Better yet, I know (even though it is not true) that he is dead at present time.

    Maybe I could just get a caveman and tell him, "This guy(some1 annoying...president of RIAA for example.) in the picture is dead, but I want you to travel back in time to kill him."

    If I try to kill the guy myself, it wouldn't work as I know he is alive today.

    Intesting theory, I never knew the very fabric of space and time depends on the observation of humanity.

    "Both popular and professional research articles in cosmology often use the term "Universe" when they really mean "observable universe". This is because unobservable physical phenomena are scientifically irrelevant; that is, they cannot affect any events that we can perceive, and therefore, it is argued, effectively do not exist. See also Causality (physics)." - Wikipedia

  21. This is irony at its best on Apple The Current Fastest Growing Brand · · Score: 3, Interesting

    Who would had thought that a 25 something year old brand is the fastest growing brand in the whole world.

  22. Microsoft, Mozilla, Opera, etc. are screw on Viewing Files on the Web Considered Possession? · · Score: 0, Offtopic

    If the lawyer loses this one, these companies are going to get screw Big Tim (tm). Just imagine, all the people who lost their suits start sueing these companies/foundation for making their web browser cache pictures.

    Trouble is ahead.

  23. Didn't someone predicted the future of Google be4? on Who Will Google Buy Next? · · Score: 3, Insightful

    I thought the Oracle had foretold the destiny of Google in EPIC!!! What's going on?! Is the world going crazy?!

    /joke

  24. From what I see... on IBM Turns to Open Source Development · · Score: 2, Interesting

    Basically IBM has a big project that needs to be done.
    They break it down into components, and delegate these components into their labs around the world.
    Now here is the smart part- Instead of hiring REAL (as in doing it for a living) programmers in their centres to do program, they get OS community to do them instead.

    After a year, IBM collects all the parts together, assemble them, trim and fit them until they work right.


    PROFIT!!!


    Not much cost- they are genius.

  25. And so is their letter to the Economist on BSA Piracy Study Deeply Flawed · · Score: 4, Insightful

    Software piracy

    SIR - Your article on software piracy was extreme, misleading and irresponsible ("BSA or just BS?", May 21st). The headline was particularly offensive. The implication that an industry would purposely inflate the rate of piracy and its impact to suit its political aims is ridiculous. The problem is real and needs no exaggeration.



    What an amusing little letter from an organization such as BSA.

    extreme, misleading and irresponsible

    Fine, enlighten us then- what is so "BS" about it, any proof/evidence?

    The headline was particularly offensive.

    W00t, let's go after the title, not the actual story itself! Attack the title to create an impression! Yes that's the way to win an arguement.

    The implication that an industry would purposely inflate the rate of piracy and its impact to suit its political aims is ridiculous.

    I don't see why not. Wow, I am really speechless. Fine, if you want to accuse the E of slendering, provide evidence that would uphold in a court battle.

    The problem is real and needs no exaggeration.

    So is your logic apparently.

    Jesus, I can't believe the government is delegating the enforcement power to these idiots. This stuff looks as if it had been pass thru the random complain letter generator.

    They should just hire me- even I can do better than that.