Is flame matter or energy?

AI Thread Summary
The discussion revolves around the nature of flame and fire, questioning whether they are forms of energy or matter. Participants express curiosity about the substance of a flame, with one suggesting it may be highly ionized oxygen gas. There is a humorous exchange about the duplication of topics, indicating some confusion among users. The thread highlights a desire for clarity on the scientific understanding of fire. Overall, the conversation emphasizes the need for more information on the characteristics of flames and fire.
ShadowDatsas
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What is flame?
What is fire?
A form of energy?
Or maybe matter?...
Anyone here knows the substance of a flame? If it has.
I don't know but I am sure I would like to know!
 
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ShadowDatsas said:
What is flame?
What is fire?
A form of energy?
Or maybe matter?...
Anyone here knows the substance of a flame? If it has.
I don't know but I am sure I would like to know!

Wait, did you just copy my thread?

I just posted it like less than 12 hours of the creation of this thread lol.

I'm pretty sure its very highly ionized oxygen gas,

But I'm not 100% sure on it, that's why i made the thread...
no need to remake mine
 
Yes! You found it!
I am a 5 years old kid that "steals" topics to gain more posts! Isn't it smart!?
Yayyyy.
Now can someone tell me (if they want to) what fire is, who is pretty sure?
 
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I am going through this course on collision detection: https://siggraphcontact.github.io/ In this link is a PDF called course notes. Scrolling down to section 1.3, called constraints. In this section it is said that we can write bilateral constraints as ##\phi(\mathbf{x}) = 0## and unilateral constraints as ##\phi(\mathbf{x}) \ge 0##. I understand that, but then it says that these constraints call also be written as: $$\mathbf{J} \mathbf{u} = 0, \mathbf{J} \mathbf{u} \ge 0,$$ where...

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