Naked Science Forum

On the Lighter Side => That CAN'T be true! => Topic started by: tiffymiller on 18/02/2022 14:23:55

Title: Re: How can I create a vacuum?
Post by: tiffymiller on 18/02/2022 14:23:55
We are not going to explain the detailed procedure to create a vacuum here. But we are going to share some tips with you to create a vacuum. Vacuum cleaners create a pressure differential between the interior and the exterior of the home. So if you want to create a vacuum in your home, then you should understand the pressure differential. Generally, all the matter in our universe exerts force on every other matter. So there is a force (-F) between any two portions of matter. As shown in the figure.

Title: Re: How can I create a vacuum?
Post by: Kartazion on 18/02/2022 21:02:51
We are not going to explain the detailed procedure to create a vacuum here. But we are going to share some tips with you to create a vacuum.
Yes, you just have to remove all the air molecules from a chamber or airtight container with a vacuum pump.

Vacuum cleaners create a pressure differential between the interior and the exterior of the home. So if you want to create a vacuum in your home, then you should understand the pressure differential.
AFAIK the pressure is due to ambient air on earth while in space the pressure is so low that many consider it non-existent.

... As shown in the figure.
We see no figure.
Title: Re: Re: How can I create a vacuum?
Post by: Origin on 19/02/2022 00:26:30
Vacuum cleaners create a pressure differential between the interior and the exterior of the home.
Nope.  A vacuum cleaner has an electric motor attached to a fan.  The spinning fan has a low pressure and a high pressure side.  The high pressure air is blown out of the vacuum into the house and the low pressure side leads to a hose that sucks in air due to the pressure being lower at the fan inlet than ambient pressure.
Generally, all the matter in our universe exerts force on every other matter.
No it doesn't,
So there is a force (-F) between any two portions of matter.
No there isn't.

Pressure is the force that atoms or molecules impart on a surface.  Pressure will increase if the temperature rises, the volume decreases or the number of molecules is increased.  If 2 areas of different pressure are exposed to each other the pressure will equilibrate by the flow of molecules from the high pressure area to the low pressure area.   
Title: Re: Re: How can I create a vacuum?
Post by: Bored chemist on 19/02/2022 01:56:23
No it doesn't,
Well... it does, but gravity is a tiny force.
Title: Re: Re: How can I create a vacuum?
Post by: evan_au on 19/02/2022 07:00:09
Quote
Vacuum cleaners create a pressure differential between the interior and the exterior of the home.
Only if you stick the pipe out the window.
Otherwise it just creates a pressure differential between one part of the room and another part of the same room.
Title: Re: How can I create a vacuum?
Post by: Colin2B on 19/02/2022 08:52:19
Vacuum cleaners create a pressure differential between the interior and the exterior of the home. So if you want to create a vacuum in your home, then you should understand the pressure differential.
AFAIK the pressure is due to ambient air on earth while in space the pressure is so low that many consider it non-existent.
I don’t understand what your reply has to do with a vacuum cleaner in a room!
Title: Re: How can I create a vacuum?
Post by: Kartazion on 19/02/2022 12:28:10
Vacuum cleaners create a pressure differential between the interior and the exterior of the home. So if you want to create a vacuum in your home, then you should understand the pressure differential.
AFAIK the pressure is due to ambient air on earth while in space the pressure is so low that many consider it non-existent.
I don’t understand what your reply has to do with a vacuum cleaner in a room!
I confess. Having stipulated the vacuum pump above, I wanted here to make an answer according to the pressure.
Quote
Vacuum cleaners create a pressure differential between the interior and the exterior of the home. So if you want to create a vacuum in your home, then you should understand the pressure differential.
Title: Re: Re: How can I create a vacuum?
Post by: Origin on 19/02/2022 13:35:19
Well... it does, but gravity is a tiny force.
I read his post to say that all matter has a repulsive force (pressure) on other matter.  I was more or less guessing at what his garbled post was trying to say.