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  • CF has always been a site that welcomes people from different backgrounds and beliefs to participate in discussion and even debate. That is the nature of its ministry. In view of recent events emotions are running very high. We need to remind people of some basic principles in debating on this site. We need to be civil when we express differences in opinion. No personal attacks. Avoid you, your statements. Don't characterize an entire political party with comparisons to Fascism or Communism or other extreme movements that committed atrocities. CF is not the place for broad brush or blanket statements about groups and political parties. Put the broad brushes and blankets away when you come to CF, better yet, put them in the incinerator. Debate had no place for them. We need to remember that people that commit acts of violence represent themselves or a small extreme faction.

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Patashu

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silentbob said:
Psst. I know you did poorly in your science classes but there is a scientific law called "The Law of Conservation of Mass" which states that matter cannot be created nor destroyed.
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...in chemical reactions.
Relativity breaks it, quantum physics breaks it, matter/antimatter reactions break it, it's only a rule of thumb, like how the law of universal gravitation is only a rule of thumb. The big bang theory itself requires matter to be created from energy.
What we do have though is the law of mass/energy conservation which always holds as far as anyone is concerned.
 
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Tomk80

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Was this sarcastic? Because matter can be created and destroyed, by a conversion from or to energy. E = m c[sup]2[/sup] you know.
 
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silentbob

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You gotta remember, they dont teach Quantum physics in schools, nor stuff involving anti-matter.

If you think about it, the big bang didn't create matter. Something had to be condensed into a singularity in order for it to explode.
 
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silentbob

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Tomk80 said:
Was this sarcastic? Because matter can be created and destroyed, by a conversion from or to energy. E = m c[sup]2[/sup] you know.
Click to expand...

Ok, I want you to do something. Take a video file, and CONVERT it from a .mpg to a wmv file. The file still exists just in a different form. When matter is converted to energy as in an atomic explosion or just a log burning in your fireplace, the log is still there but its just in the form of heat energy. Its a Chemical Change.
 
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Tomk80

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It is not a chemical change. A chemical change would be the log chancing to a different substance. In normal chemical reactions this is indeed what happens.

However, in physical reactions like nuclear reactions and the kind, this is not what happens. There is no new substance there. When, for example, you let matter and antimatter collide, there is no matter there anymore. It is really gone. There really is no mass left in that case. You do, however, get an extreme amount of energy.

You would be correct if you had said that matter is a particular form of energy and that energy can be converted into matter and matter into energy. However, energy has no mass. In nuclear reactions, the total amount of mass can indeed decrease or increase. It is not conserved. What is conserved is the amount of energy.
 
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silentbob

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Au contrare, the log does turn into a different substance, ASH it becomes ash.

Energy is a form of matter, it simple.
 
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Tomk80

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silentbob said:
Au contrare, the log does turn into a different substance, ASH it becomes ash.
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You apparantly haven't read my post. Read my post again and respond to what I actually said.

Energy is a form of matter, it simple.
Click to expand...
Not in quantum physics it isn't. See here for example. As I said before, in nuclear reactions mass/matter can be lost and converted to energy. For your further information, a log burning is not a nuclear reaction.
 
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corvus_corax

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silentbob said:
Psst. I know you did poorly in your science classes but there is a scientific law called "The Law of Conservation of Mass"
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"Conservation of Mass-Energy" is more correct, and yes, there is a difference
silentbob said:
Energy is a form of matter, it simple.
Click to expand...
What?
Are you referring to mass/energy equivalence?
If so, you might want to change your phrasing, as mass and matter are not the same thing.

Now, instead of insulting people's academic achievments, can we at least keep the conversation civil, if not (dare I hope?) on topic?
 
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