Will there is any effect of Gravity on Fire?
from any way,Gravity causes any effect on fire.
Physics
- asked 8 years ago
- Nitish kumar
3Answer
It's precisely because of gravity that they go upwards. The gravity is pulling on both fire and the air. The air, being cooler and thus denser, puts pressure on the lighter flame when it is displaced(Due to Newton's Thirld law).
That pressure is stronger on the bottom than the top, and pushes the flame upwards. That's buoyancy; it's the same thing that makes boats float.
(Buoyancy forceis an upward force exerted by a fluid(liquid or, gas) that opposes the weight of an immersed object.)
When the gravity is absent( as in space), the cooler, denser air doesn't flow downwards. It continues to put pressure on the flame from all directions, which means it comes out as a sphere rather than going upwards. This is what a flame looks like on a space station:
- answered 8 years ago
- Nitish kumar
Absolutely. Flame is superheated gases, which rise because they're less dense than the air surrounding them. It's gravity pulling the cooler air down around them.
If you don't have gravity, flame burns in a perfect sphere. But it also burns out quickly, because the lack of convection means that new oxygen isn't being brought to the heat source.
NASA even did the experiment on the space shuttle in 1997.
- answered 8 years ago
- Sunny Solu
Wikipedia tells us that this is because: “In microgravity or zero gravity environment, such as on a circular orbit , convection no longer occurs and the flame becomes spherical, with a tendency to become bluer and more efficient.”
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- answered 8 years ago
- Sunny Solu
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