Heat, fire, pressure - things i don't understand


by fudoki
Tags: heat, pressure, things
fudoki
fudoki is offline
#1
Jan2-09, 06:05 PM
P: 1
Hi all,

Apologies if this is in the wrong location, i'm new (and using that as an excuse :) )

i am currently working on a fantasy novel and having some issues that my days old knowledge of thermodynamics, and what-not, is nowhere near capable of managing.

So, to dive straight in; if we were to assume that you had access to a large amount of energy (potential or otherwise) and chose to use said energy by transferring it to a point in the air in front of you to generate a high temperature (thousands of degress) would a flame appear? Or, is a flame only generated when a secondary material is introduced, such as wood, carbon etc?

if you were to heat to a small part of the air in front of you quickly and highly enough would you create a shockwave which would 'push' things?

any help, knowledge or nudges in the right direction would be greatly appreciated.

Many thanks.
Phys.Org News Partner Physics news on Phys.org
Physicists design quantum switches which can be activated by single photons
'Dressed' laser aimed at clouds may be key to inducing rain, lightning
Higher-order nonlinear optical processes observed using the SACLA X-ray free-electron laser
mgb_phys
mgb_phys is offline
#2
Jan2-09, 06:43 PM
Sci Advisor
HW Helper
P: 8,961
You wouldn't create a flame - a flame needs fuel+oxygen+heat.
You could create a plasma if you heated it enough - like a spherical glowing spark
Enough heating can create a force, lightning creates a supersonic shock by heating air - that's the thunder you hear.
montoyas7940
montoyas7940 is offline
#3
Jan2-09, 06:46 PM
montoyas7940's Avatar
P: 263
If some of the nitrogen were oxidized would there be a visible flame?


Register to reply

Related Discussions
How well do I understand pressure? General Physics 5
Hi! 2 Simple everyday things that I dont understand. Please help? Taps and vaccum General Physics 16
Fire Hydrants, pressure and velocity.. Introductory Physics Homework 4
Me trib, Me make fire. fire bad General Discussion 13
relating heat to fire to light to pressure to electricity General Physics 1