Is it practically possible to construct a closed system?

AI Thread Summary
A closed or isolated system is theoretically challenging to achieve in practice. While a vacuum may limit energy transfer from the outer atmosphere, it does not eliminate thermal radiation from the system itself. Thermal radiation emitted by surfaces can still affect the system's energy balance. Additionally, electromagnetic radiation, such as sunlight, can travel through a vacuum without needing a medium. Ultimately, a perfectly isolated system is not feasible due to these energy transfer mechanisms.
VishalB95
Messages
23
Reaction score
0
In practice, is a closed or isolated system possible?
My friends keep saying No, but isn't a system inside say, a vacuum isolated?
There is no outer atmosphere for transfer of energy to take place.
 
Engineering news on Phys.org
VishalB95 said:
In practice, is a closed or isolated system possible?
My friends keep saying No, but isn't a system inside say, a vacuum isolated?
There is no outer atmosphere for transfer of energy to take place.
No, you can't have a perfectly isolated system. In the case of a vacuum, thermal radiation will be emitted by the inner surface of the vacuum chamber and reach the system that way. The most obvious (and important for humans!) example of this is the sun.
 
How can radiation be transmitted without a medium??
 
VishalB95 said:
How can radiation be transmitted without a medium??
How does sunlight reach Earth? There's a vacuum between the Earth and the sun. Electromagnetic radiation does not require a medium.
 
Aaah yeah! Thanks
 
Thread 'Turbocharging carbureted petrol 2 stroke engines'

Thread 'Turbocharging carbureted petrol 2 stroke engines'

Hi everyone, online I ve seen some images about 2 stroke carbureted turbo (motorcycle derivation engine). Now.. In the past in this forum some members spoke about turbocharging 2 stroke but not in sufficient detail. The intake and the exhaust are open at the same time and there are no valves like a 4 stroke. But if you search online you can find carbureted 2stroke turbo sled or the Am6 turbo. The question is: Is really possible turbocharge a 2 stroke carburated(NOT EFI)petrol engine and...
View full post »

Thread 'HP Required to move a robot 10meters at 1.5m/sec'

I need some assistance with calculating hp requirements for moving a load. - The 4000lb load is resting on ball bearing rails so friction is effectively zero and will be covered by my added power contingencies. Load: 4000lbs Distance to travel: 10 meters. Time to Travel: 7.5 seconds Need to accelerate the load from a stop to a nominal speed then decelerate coming to a stop. My power delivery method will be a gearmotor driving a gear rack. - I suspect the pinion gear to be about 3-4in in...
View full post »

Similar threads

Gerotor pump, will it work in a closed system without air?
Replies
8
Views
2K
Calibrating Pump/Venturi (Air) in a Closed Recirculating Water System
Replies
1
Views
396
Opening a door between a vacuum and atmosphere
Replies
3
Views
2K
B Proper Understanding of Dynamical Systems and State Space
Replies
5
Views
921
Partially closed pump discharge valve question
Replies
7
Views
4K
I In a closed loop system with a pump, how can we control the pressure?
Replies
26
Views
7K
Is the Total Energy Change in a Closed System Always Zero?
Replies
8
Views
946
Why does the entropy of a closed system remain constant in a reversible process?
Replies
10
Views
3K
Chemistry Is the differential of heat in a reversible process in an isolated system equal to zero?
Replies
10
Views
2K
What factors affect heat rejection in vacuum pump systems?
Replies
3
Views
3K

Hot Threads

Recent Insights

Back
Top