Yes, you do have to be careful not to tape or glue too large a section of the straw. It works better with a larger jar and longer straw or pointer since it will pivot up and down more.
Close to “normal” atmospheric pressure which is 1013mb. Basically in between typical low pressure and high pressure levels. This way your pointer will point down during low pressure and up during high pressure, but that isn’t a huge deal. This barometer won’t be that accurate anyway unless you have a very air tight seal on the jar. So, if any air gets in or out as the pressure changes the barometer will drift over time. You can make this type of barometer very accurate long term if you use a good membrane and seal that won’t leak at all. Probably you could spread melted wax around the edge to seal things better and use something thicker than a balloon so air won’t get through at all.
When using this home made barometer, when I cool something the temperature and the air pressure should both decrease right? When I use the diy barometer it shows high pressure. Can someone explain pls?
That is true for a fixed volume. In the atmosphere, cold air masses are generally of much higher air pressure than warm air masses. The strongest high pressure systems during the winter are generally associated with the coldest air masses since cold air is more dense and thus exerts a higher pressure since a cold pool of air will have more air molecules than a warm pool of air.
If you have an enclosed volume of air inside a container that couldn’t bend or flex in any way, and no air could get in or out, then everything will work as you would expect from the ideal gas law. If you increase the temperature then the pressure will increase and if you decrease the temperature then the pressure will decrease. This kind of barometer isn’t going to be that accurate if it is in an environment that changes temperature by a lot unless you can make it with materials that won’t expand or contract with temperature much. Like a Pyrex glass and some type of rubber top piece that is pretty insensitive to temperature.
I don’t think this works…. Because I’ve built everything like you did and somehow when it’s sunny outside and a nice whether, the pointer goes down and the opposite when the sky looks like it’s about to rain….
It is a type of aneroid barometer. Your teacher may have been thinking of a mercury kind, but most barometer’s used today are not mercury ones given that mercury is toxic.
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Good job i helped it for write in my school well done 👍
Thanks for the great explanation on building and understanding the project!
He has made a simple aneroid barometer , but the beaker should have a vacuum in it , temperature will greatly affect it.
EXCELLENT
Excellent
great conceptual start in the right direction
Wow, this is awesome dude!
super cool dude
Thank you so much 😊 you helped me get an “A” on my Barometer project In science class!
Awesome!
Thanks
I don’t have a lot of those stuff so i’m gonna fail 😭
good job...
You helped me to finesh my science project for Monday and I am class 8th
Finish*
cool video !
Good job sirr🔥🔥
Thanks
very well
pog champ
Like
question: if the straw is glued or taped, how is it supposed to move?
You got a like btw
Yes, you do have to be careful not to tape or glue too large a section of the straw. It works better with a larger jar and longer straw or pointer since it will pivot up and down more.
What would be the best atmospheric condition to make this barometer ?
Close to “normal” atmospheric pressure which is 1013mb. Basically in between typical low pressure and high pressure levels. This way your pointer will point down during low pressure and up during high pressure, but that isn’t a huge deal. This barometer won’t be that accurate anyway unless you have a very air tight seal on the jar. So, if any air gets in or out as the pressure changes the barometer will drift over time. You can make this type of barometer very accurate long term if you use a good membrane and seal that won’t leak at all. Probably you could spread melted wax around the edge to seal things better and use something thicker than a balloon so air won’t get through at all.
@@EarthtoSpaceScience Are you referring to a plastic jar or mason jar? I'm interested.
ur smart
When using this home made barometer, when I cool something the temperature and the air pressure should both decrease right? When I use the diy barometer it shows high pressure. Can someone explain pls?
That is true for a fixed volume. In the atmosphere, cold air masses are generally of much higher air pressure than warm air masses. The strongest high pressure systems during the winter are generally associated with the coldest air masses since cold air is more dense and thus exerts a higher pressure since a cold pool of air will have more air molecules than a warm pool of air.
Will the air pressure and temperature increase if i place both in an enclosed system?
If you have an enclosed volume of air inside a container that couldn’t bend or flex in any way, and no air could get in or out, then everything will work as you would expect from the ideal gas law. If you increase the temperature then the pressure will increase and if you decrease the temperature then the pressure will decrease. This kind of barometer isn’t going to be that accurate if it is in an environment that changes temperature by a lot unless you can make it with materials that won’t expand or contract with temperature much. Like a Pyrex glass and some type of rubber top piece that is pretty insensitive to temperature.
Nice visual presentation! Shame that he doesn't at least mention the metric measurements for the rest of the world.
hi do you have to use latex balloons or gloves
Any kind of fairly airtight flexible plastic or rubber should work.
Can you make a timelaspe video of it?
I don’t think this works…. Because I’ve built everything like you did and somehow when it’s sunny outside and a nice whether, the pointer goes down and the opposite when the sky looks like it’s about to rain….
As far as I know, good weather = more atmospheric pressure; bad weather = low atmospheric pressure
Thats not barometer i got wrong on school project my teacher dont understand
It is a type of aneroid barometer. Your teacher may have been thinking of a mercury kind, but most barometer’s used today are not mercury ones given that mercury is toxic.
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