How a thermometer works - and how to make one
ฝัง
- เผยแพร่เมื่อ 15 ส.ค. 2020
- Deane shows how and why a thermometer works and a simple experiment you can try with things around the home. SUBSCRIBE NOW
th-cam.com/users/subscription_c...
CONNECT WITH CURIOSITY
Facebook ➤ / curiosityshow
Twitter ➤ / curiosityshow
Curiosity Show ➤ www.curiosityshow.com.au - วิทยาศาสตร์และเทคโนโลยี
Many winters ago, when I was 6 or 7, my Dad bought me a balloon at the supermarket. The moment we went out in the cold it collapsed and I cried and cried. My father calmly explained what gasses undergo when the temperature changes, and he proceeded to turn on the car heater before we got in. A couple of minutes later he asked me in the car and the balloon recovered its room-temperature volume. You guys are surely awesome Dads too. Cheers to you all, fathers of curiosity. God bless!
Another great video that I watch with the kids after dinner.
Thanks for uploading stuff i watched when i was small
These are the coolest little snippets!
I like how he laughs a tiny bit when the balloon inflates and deflates again
G'day Deane,,
I love these videos where we can make the experiment out of household items,
I remember you once made a hiccup machine with a Bottle, Straw & some other parts,
I can't remember if it was the Curiosity Show or as a Guest on Hey, Hey, It's Saturday but I would love to see that again if possible
awesome stuff
“SHRINKAGE!”
I was in the pool!
This makes me wonder how well it would work with different gasses. For instance, if you were to capture carbon dioxide via baking soda and vinegar, would the weight of the gas cause the balloon to inflate more? If you filled a glass bottle with helium, would the balloon always be inflated?
That's carbon _dioxide._ I'm not sure what difference the other gases would make. Pretty sure it'd be the same, provided they were filled to the same pressure.
@@U014B You're right. my bad. I will change it right away
I assume a gas with a lower atomic/molecular mass, for example hydrogen or helium, will be more sensitive to changes in temperature, simply because it takes less energy to excite a less massive thing.
I assume a bottle full of helium, with no air or anything else inside it, will not "passively inflate" the balloon, because helium is buoyant in regard to the air in the atmosphere, not in regard to itself.
The inflation of the balloon is determined by pressure, not the molecular mass (much less "weight") of the gas. With some caveats about extreme conditions, gases follow the ideal gas law:
PV=nRT
P is pressure
V is volume
n is the amount of gas
R is a version of the ideal gas constant that matches the rest of your units.
T is temperature using an absolute temperature scale, usually Kelvins
R is always constant. The amount of gas cannot change since the bottle is sealed by the balloon. So if the temperature rises then the product PV must also rise. If the temperature decreases then the term PV must also decrease.
@@sanjaymatsuda4504 No. You are conflating heat energy with temperature. Different gases will have different heat capacities. That is the amount of energy required to change their temperature per unit of mass varies. But their behavior once they reach that temperature will be the same as given by the ideal gas law (with caveats for extremes).
That bit about putting on your shows on a hot day. I wear a lot of rings on my hands and I've always noticed that on a hot day some of them fit very tightly on my fingers, but in the wintertime when it's cold and snowy, those same rings on the same fingers feel loose, almost like they're too big.
In this case, it's not so much the increased vibration of the molecules as it is the changes in the locations of fluids in your body, especially blood.
Dean!
Hi I heard this is where to go to learn how to make thermometers?
Just like me in the morning ! 🤗🙄🙃
I really would like to translate it into spanish, of course, only if you give me the permission
Clean Cut Deane sure is spiffy looking. And this clip is a hundred times more useful than that five plus five equals two foolishness from nearly a year ago.
dude, seriously, time to get over it