Lorenzo St Dubois said about 2 years ago or at 6:47PM on Monday, August 28 2006.
I'm interested in the cooling properties of water. Why is is that when you take an iron pan out of a 300 degree oven it cools a lot faster when in 70 degree water than it does when in 20 degree oxygen?
I'm aware that we don't fully understand everything about water even at this stage in the game.
Water has a much higher specific heat capacity than air.
Basically meaning that it takes a lot more energy to change the temperature of water than it does air so it can absorb the heat energy of a hot pan a lot more effectively than air.
He said MODI!
Fluids (liquids and gasses) are not typically good conductors. This is due to the large distance between atoms in a gas: fewer collisions between atoms means less conduction. As density decreases so does conduction.
Gasseous oxygen is far less dense than liquid water.
Well, I can understand that explanation. Thanks Lokihanns.
Yep.
Yayy physics!!
Modi,
I am interested in how mobile phones work. I'm guessing that when you make a call from a mobile a signal is transmitted to the nearest base station and then it is relayed to where it's going via phone lines and/or a wireless system.
What I'm interested in is incoming calls. Again I'm guessing they transmitted from the nearest base station. When someone dials me does every base station in the country send out a signal looking for my phone. Or does it only come from the nearest station?
I think there is a constant signal between your phone and the nearest base station, so the network knows where you are at all times.
Some people have a display which indicates their nearest tower all the time, which suggests there is some periodic contact between the phone and the network
Modi,
How come I get a funky tingling in my mouth when I bite off a little bit of the aluminium from the kebab wrapper?
SW
Reacting with your fillings, scallywag.
Stop with your messin around
You'd better think of your future
It's time you straighten right out
Creating problems in town
Modi A question to you, Modi A question to you, Modi A question to you, Modi
Else I'll wind up in jail?
Ah Ah Ah...
can scally generate enough power from his fillings & kebab wrapper to power something useful? How much would drinking lemon juice increase the power?
Like the way uncle fester used to put a light bulb in his mouth
Mobiles are even morerishly sophistmacated than that. They fwd info (like phone's IMEI [id] number and the SIM serial number) to the nearest base station/s as they make a call. This means the telcos have mucho info on the calls you make. So forget disputing calls you think you didn't make: they know heaps- the time, the towers, the IMEI, the SIM id code etc.
On some phones (Motorola V3X for ex.) you can set how often your phone "pings" the base. The more it does that, the quicker your batteries go kaput. Also, phones that roam b/w GSM (2G &2.5G) and 3G go flat as they are constantly "scoping the scene". If you set your phone to low pings, the battery will last longer, but you will have problems when you are in the car and the phone is not "checking ahead" very often- ie call drop outs and "failed to send" text messages. Not that you should do that while driving.
The ability for the towers to know where you are is being put to good use in Europe- the tower info is (anonymously) used to track traffic levels and travel times- privacy issues abound- sure- but pretty cool technology. Think of other uses- for counting crowds at a rally, a sporting event, a riot, a M+N dinner etc.
There ya go. I never gave it much thought.
I've got a solution to the impending oil crisis, and the obesity problem, AND the welfare problem. Get all obese people and dole bludgers to sit on farms of exercise bikes and pedal away in half hour shifts. They would be paid, we wouldn't need coal or oil, since we could have trains and electric cars running off the power they produce, and they'd lose weight in the process. It might need a bit of tweaking. How many bikes/fatties do you reckon you'd need to generate enough power to run a city?
think of all the excess ham....
Ask peter pedals
and for tracking down pedo's on SVU
No, no, no. You don't pay THEM, you have them pay YOU.
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I've seen the same footage, but I'm pretty sure it wasn't regualr old water, it was some special liquid they had developed which had a high capacity for holding dissolved oxygen. And it was thick, so the mouse had to really draw heavily to get a lung full. Wonder if it's on YouTube...
That was on that movie. Whatsit.
Where they put the mouse in the cage in the whatever the fuck. It freaks out to shit.
It was on beyond 2000, as well. You mean the Abyss, right?
i'm not going to read the thread, but what is your doctorate on?
seuss.
Well, like all PhDs, it is a doctor of philosophy, but my thesis is on the symbiotic fungi associated with the roots of an Australian native plant Family. Function and identity, mainly.
do you haev to put a theoretical framework over it or is it more research scientific going where no man has gone before type thing?
Er... I have to put it in the perspective of past research, so I have a 40,000 word Lit review to open it up. Then there's all my experimental work, and then there's my conclusions.
and you hand it in soon? will your username change to Dr Modi?
Hand it in in a matter of weeks, OhYeah. I will not change my username. Probably.
bet he changes his avatar though.
something like this:
I like this one better
excellent. for some reason i find peoples doctorates interesting. expanding your mind and what not. mainly coz i reckon anyone can get through a degree.
The way things are going, it seems like everyone is going to get a degree, and they will mean very little.
exactamundo.
let us know when we can call ya dr modi
Won't graduate until next year, probably.
pfft, graduation schaduation. when you pass you pass
hey modi,
seeing your a fungi freak... Whats the best way to treat my thrush infection that is covering all over my wang?
And is it sexually trasmittable?
Cheers Kevin, 24
answer him with the red itchy penis!