What is fire?

Vieope · 01-18-2005, 06:16 PM

Quote:

Originally Posted by maniclion

Did you know that radio waves are light and could be seen if we had the eyes for it?

The stars burn Hydrogen, helium or whatever stage they are in the temperature of the chemical reactions of each element cause a wavelength to give off different light, why do welders use blue flames instead of bright red?

I didn´t know it was considered light but I already thought it was possible to see it if we had proper eyes. Is it really composed by photons? All this talk about photons and light, today starts a whole year of celebration of Einstein in Germany. It has been 100 years since he wrote his theories.

Yeah, something must burn, I just find it intriguing that it burns all the time.

Vieope · 01-18-2005, 06:20 PM

Quote:

Originally Posted by rockgazer69

why?

That is how they find out how the stars are made. Wave lengths. There are some unsuals stars in the universe. This for example:

Quote:

WASHINGTON, FEBRUARY 15: Call it the ultimate Valentine. The core of a cooling white dwarf star 50 light-years from Earth is composed almost entirely of crystalline carbon, scientists say. In short, a giant diamond. In fact, according to an announcement from the Harvard-Smithsonian Center for Astrophysics, this white dwarf has a diameter of 2,500 miles and weighs 5 million trillion trillion pounds, or 10 billion trillion trillion carats. The largest gem-quality diamond yet found on Earth was the 3,106-carat ‘‘Cullinan’’ discovered in 1905. The 530-carat ‘‘Star of Africa’’ in the British crown jewels was cut from it.

‘‘The theory is that when dwarf stars get cool enough they begin to crystallise,’’ said centre astrophysicist Travis Metcalfe, head of the research. ‘‘The problem is that once they cool down they can’t store any heat at all, and they become impossible to detect.’’

maniclion · 01-18-2005, 06:27 PM

Like a diamond in the sky. Maybe the stars we see twinkling are reflections from those sparkling diamond dwarfs?

Vieope · 01-18-2005, 06:33 PM

Quote:

Originally Posted by maniclion

Like a diamond in the sky. Maybe the stars we see twinkling are reflections from those sparkling diamond dwarfs?

That is a pretty good theory. It is not better than the theory you made about balck holes and eyes. I do like the stars, billions of them out there with so many possibilities. Last month they saw for the first time new galaxies been born. Did you see the images of Titan that I posted?

Little Wing · 01-18-2005, 06:43 PM

go here n talk to the resident ghost, he may have answers.

bio-chem · 01-18-2005, 06:46 PM

the sun does not burn oxygen. this is not a cumbustion reaction. in a combustian reaction you would have water and carbon dioxide as an end product due to the reaction with oxygen. the sun is a nuclear reaction. because of the intense pressure and heat in the sun's core you have hydrogen atoms coming together and making helium. and yes blue is a hotter flame than red. this can be misleading however because if something is being burned during the reaction then another color may be given off. for instance, copper burns green, and potasium will burn a lavender color.

Little Wing · 01-18-2005, 06:46 PM

diamante?

Little Wing · 01-18-2005, 06:49 PM

it's Dante's house in Florence.

Vieope · 01-18-2005, 06:50 PM

Quote:

Originally Posted by bio-chem

the sun does not burn oxygen. this is not a cumbustion reaction. in a combustian reaction you would have water and carbon dioxide as an end product due to the reaction with oxygen. the sun is a nuclear reaction. because of the intense pressure and heat in the sun's core you have hydrogen atoms coming together and making helium. and yes blue is a hotter flame than red. this can be misleading however because if something is being burned during the reaction then another color may be given off. for instance, copper burns green, and potasium will burn a lavender color.

That is very good, thanks. Do you know if there is something solid there? What is it? I have seen pictures and it seems to have a very good solid structure, what is it that can stand such high temperatures?

Vieope · 01-18-2005, 06:51 PM

Quote:

Originally Posted by rockgazer69

diamante?

Diamante

bio-chem · 01-18-2005, 07:28 PM

what do you mean solid? there are verry small amounts of metals in the sun. these come from the nuclear reaction in the sun.

maniclion · 01-18-2005, 07:42 PM

That solid structure is Diablo's Den and soon it will collapse into a black hole and suck in your soul.

Its strange maybe the hydrogen condenses into helium which condenses into a tighter ball and eventually becomes so compact it implodes and forms a rift in space hungry for all elements.

Vieope · 01-18-2005, 07:54 PM

Quote:

Originally Posted by maniclion

That solid structure is Diablo's Den and soon it will collapse into a black hole and suck in your soul.

Sweet.

Little Wing · 01-18-2005, 08:25 PM

A Valentine rose from the Cosmos

BBC Science, Dr David Whitehouse

A telescope in space has sent back a cosmic Valentine picture - a stellar nursery resembling a pink rosebud. The Spitzer Space Telescope, launched last year, looked at a group of newborn stars embedded in a cloud of gas and dust called a reflection nebula.

"The picture is more than just pretty," says astronomer Thomas Megeath.

"It helps us understand how stars form in the crowded environments of stellar nurseries." Billions of years ago our Sun was born in such a cloud.

Located some 3,330 light-years away in the constellation Cepheus and spanning 10 light-years across, the rosebud-shaped nebula is home to about 130 young stars.

Previous images of the gas cloud, known as NGC 7129, taken in optical light show a dusting of hot young stars against the luminescent cloud.

The Spitzer telescope, sensitive to infrared radiation, produces a much more detailed view. Highlighted in false colours are the hot dust particles and gases situated around the stars.

The pink rosebud contains adolescent stars that have blown away blankets of hot dust, while the green stem holds newborn stars whose radiation has excited surrounding gas.

Little Wing · 01-18-2005, 08:26 PM

diamonds and flowers

Vieope · 01-18-2005, 08:27 PM

Damn that looks so good.

Little Wing · 01-18-2005, 08:31 PM

some of it has to be magic...

Vieope · 01-18-2005, 08:38 PM

Quote:

Originally Posted by rockgazer69

some of it has to be magic...

Flex · 01-18-2005, 10:02 PM

FIRE! FIRE!

rockgazersux · 01-18-2005, 11:52 PM

Quote:

Originally Posted by Vieope

Damn that looks so good.

no wonder...all brazilians are stupid in science. Anyway my mexican dude is good at trimming my garden and taking care of my dogs.

Little Wing · 01-19-2005, 11:27 AM

Burning in Outer Space—Microgravity

The study of combustion in a low-gravity environment can improve both material production and fire safety in Earth’s orbit

Related Reading—Research Profile
Simulation of Combustion in a Microgravity Environment

A better understanding of the chemical process of combustion can lead to significant technological advances, such as less polluting vehicles, more fuel-efficient vehicles. Unfortunately, gravity can interfere with the study of combustion. Gravity drags down gasses that are cooler—and, therefore, denser—than heated gasses. This movement mixes the fuel and the oxidizer substance that promotes burning. Because of this mixing, an observer cannot necessarily distinguish what is happening as a result of the natural combustion process and what is caused by the pull of gravity.

The absence of gravity has a visible effect on combustion, as seen in these images of burning candles.
Photo credit: Microgravity Science Division

To remove this uncertainty, scientists can conduct experiments that simulate the negation of gravity through freefall. This condition is known as a microgravity environment. A microgravity experiment may take place in a chamber that is dropped down a hole or from a high-speed drop tower. The experiment can also be conducted in an airplane or a rocket during freefall in a parabolic flight path. This method provides a few seconds of microgravity at most.

An experiment that requires the prolonged absence of gravity may necessitate use of an orbiting spacecraft as a venue. However, access to an orbital laboratory is difficult to acquire. High-end computing centers such as the NCCS can provide a practical alternative to operating in microgravity. Scientists can model phenomena such as combustion without gravity’s observational interference.

The study of microgravity combustion produces important benefits beyond increased observational accuracy. Certain valuable materials that are produced through combustion can be formed with a more uniform crystal structure—and, thus, improved structural quality—when the pull of gravity is removed. Furthermore, understanding how fires propagate in the absence of gravity can improve fire safety aboard spacecraft.

sgtneo · 01-19-2005, 12:05 PM

fire can be created by all threee elements but it is a form of gas

Neo

Vieope · 01-19-2005, 12:19 PM

Quote:

Originally Posted by rockgazer69

high-speed drop tower

Is there a picture on the website for that tower?

Vieope · 01-19-2005, 12:19 PM

Quote:

Originally Posted by sgtneo

fire can be created by all threee elements but it is a form of gas

Neo

Hey do you happen to know if everything is inflammable?

sgtneo · 01-19-2005, 12:29 PM

no human skin is inflamable but some stuff ignites pretty easy lol most stuff will just blacken or melt not actually catch alight

Neo

Vieope · 01-19-2005, 12:40 PM

Quote:

Originally Posted by sgtneo

no human skin is inflamable but some stuff ignites pretty easy lol most stuff will just blacken or melt not actually catch alight

Neo

Human skin is inflammable? This must be a difficult experience to learn.
Have you ever saw that paper that doesn´t catch fire? Maybe it is not news in US but I bought an imported product once and it contained this paper. Needless to say and I had so much fun in an afternoon.

Maybe only organic compounds can catch fire.

sgtneo · 01-19-2005, 12:43 PM

could be, newspapar catches alight really well and i think just about anything gets a flame on it when you put can of deoderant in the middle lol

Neo

01-18-2005, 08:25 PM	#44
Little Wing SEMPER~FIDELIS Elite Member Join Date: Mar 2004 Location: United States Posts: 21,685 Blog Entries: 1 Photos: 191	A Valentine rose from the Cosmos BBC Science, Dr David Whitehouse A telescope in space has sent back a cosmic Valentine picture - a stellar nursery resembling a pink rosebud. The Spitzer Space Telescope, launched last year, looked at a group of newborn stars embedded in a cloud of gas and dust called a reflection nebula. "The picture is more than just pretty," says astronomer Thomas Megeath. "It helps us understand how stars form in the crowded environments of stellar nurseries." Billions of years ago our Sun was born in such a cloud. Located some 3,330 light-years away in the constellation Cepheus and spanning 10 light-years across, the rosebud-shaped nebula is home to about 130 young stars. Previous images of the gas cloud, known as NGC 7129, taken in optical light show a dusting of hot young stars against the luminescent cloud. The Spitzer telescope, sensitive to infrared radiation, produces a much more detailed view. Highlighted in false colours are the hot dust particles and gases situated around the stars. The pink rosebud contains adolescent stars that have blown away blankets of hot dust, while the green stem holds newborn stars whose radiation has excited surrounding gas.

01-18-2005, 08:27 PM	#46
Vieope Monochromatic Bunny Join Date: Oct 2003 Location: drinking coffee.. Posts: 14,863 Photos: 10	Damn that looks so good.
	FURtherness

01-18-2005, 10:02 PM	#49
Flex FLEXecutioner Join Date: Sep 2003 Location: Pomping Iyuhn Posts: 6,278 Photos: 2	FIRE! FIRE!
	You're a funny guy, Sully, I like you. Dat's why I'm going to kill you lahst. * Got juice?Need Motivation?How to Train* Arnold vs. Ronnie vs. Haney vs. Sergio YEAH BUDDY...LIGHT WEIGHT!Ahhnold*

01-18-2005, 06:27 PM	#33
maniclion Catalyst Elite Member Join Date: Aug 2003 Location: Hawaii, selling munitions for the war on EcoTerror Posts: 18,394 Photos: 10	Like a diamond in the sky. Maybe the stars we see twinkling are reflections from those sparkling diamond dwarfs?

01-18-2005, 06:43 PM	#35
Little Wing SEMPER~FIDELIS Elite Member Join Date: Mar 2004 Location: United States Posts: 21,685 Blog Entries: 1 Photos: 191	go here n talk to the resident ghost, he may have answers.

01-18-2005, 06:46 PM	#36
bio-chem Registered User Join Date: Dec 2004 Location: Utah Posts: 4,533 Photos: 14	the sun does not burn oxygen. this is not a cumbustion reaction. in a combustian reaction you would have water and carbon dioxide as an end product due to the reaction with oxygen. the sun is a nuclear reaction. because of the intense pressure and heat in the sun's core you have hydrogen atoms coming together and making helium. and yes blue is a hotter flame than red. this can be misleading however because if something is being burned during the reaction then another color may be given off. for instance, copper burns green, and potasium will burn a lavender color.

01-18-2005, 06:49 PM	#38
Little Wing SEMPER~FIDELIS Elite Member Join Date: Mar 2004 Location: United States Posts: 21,685 Blog Entries: 1 Photos: 191	it's Dante's house in Florence.

01-18-2005, 07:28 PM	#41
bio-chem Registered User Join Date: Dec 2004 Location: Utah Posts: 4,533 Photos: 14	what do you mean solid? there are verry small amounts of metals in the sun. these come from the nuclear reaction in the sun.

01-18-2005, 07:42 PM	#42
maniclion Catalyst Elite Member Join Date: Aug 2003 Location: Hawaii, selling munitions for the war on EcoTerror Posts: 18,394 Photos: 10	That solid structure is Diablo's Den and soon it will collapse into a black hole and suck in your soul. Its strange maybe the hydrogen condenses into helium which condenses into a tighter ball and eventually becomes so compact it implodes and forms a rift in space hungry for all elements.

01-18-2005, 08:26 PM	#45
Little Wing SEMPER~FIDELIS Elite Member Join Date: Mar 2004 Location: United States Posts: 21,685 Blog Entries: 1 Photos: 191	diamonds and flowers

01-18-2005, 08:31 PM	#47
Little Wing SEMPER~FIDELIS Elite Member Join Date: Mar 2004 Location: United States Posts: 21,685 Blog Entries: 1 Photos: 191	some of it has to be magic...

01-19-2005, 11:27 AM	#51
Little Wing SEMPER~FIDELIS Elite Member Join Date: Mar 2004 Location: United States Posts: 21,685 Blog Entries: 1 Photos: 191	Burning in Outer Space—Microgravity The study of combustion in a low-gravity environment can improve both material production and fire safety in Earth’s orbit Related Reading—Research Profile Simulation of Combustion in a Microgravity Environment A better understanding of the chemical process of combustion can lead to significant technological advances, such as less polluting vehicles, more fuel-efficient vehicles. Unfortunately, gravity can interfere with the study of combustion. Gravity drags down gasses that are cooler—and, therefore, denser—than heated gasses. This movement mixes the fuel and the oxidizer substance that promotes burning. Because of this mixing, an observer cannot necessarily distinguish what is happening as a result of the natural combustion process and what is caused by the pull of gravity. The absence of gravity has a visible effect on combustion, as seen in these images of burning candles. Photo credit: Microgravity Science Division To remove this uncertainty, scientists can conduct experiments that simulate the negation of gravity through freefall. This condition is known as a microgravity environment. A microgravity experiment may take place in a chamber that is dropped down a hole or from a high-speed drop tower. The experiment can also be conducted in an airplane or a rocket during freefall in a parabolic flight path. This method provides a few seconds of microgravity at most. An experiment that requires the prolonged absence of gravity may necessitate use of an orbiting spacecraft as a venue. However, access to an orbital laboratory is difficult to acquire. High-end computing centers such as the NCCS can provide a practical alternative to operating in microgravity. Scientists can model phenomena such as combustion without gravity’s observational interference. The study of microgravity combustion produces important benefits beyond increased observational accuracy. Certain valuable materials that are produced through combustion can be formed with a more uniform crystal structure—and, thus, improved structural quality—when the pull of gravity is removed. Furthermore, understanding how fires propagate in the absence of gravity can improve fire safety aboard spacecraft.

01-19-2005, 12:05 PM	#52
sgtneo Registered User Join Date: Dec 2004 Location: UK South east Posts: 725	fire can be created by all threee elements but it is a form of gas Neo

01-19-2005, 12:29 PM	#55
sgtneo Registered User Join Date: Dec 2004 Location: UK South east Posts: 725	no human skin is inflamable but some stuff ignites pretty easy lol most stuff will just blacken or melt not actually catch alight Neo

01-19-2005, 12:43 PM	#57
sgtneo Registered User Join Date: Dec 2004 Location: UK South east Posts: 725	could be, newspapar catches alight really well and i think just about anything gets a flame on it when you put can of deoderant in the middle lol Neo