Why not nitrogen instead of CO2?
09-25-09, 09:39 PM
#51
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Two substances sublimate at room pressure, CO2 and Mothballs (paradichloridebenzene sp?). At higher pressures, also known as the "triple point", other things can sublimate.
09-25-09, 09:45 PM
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Yep. Iodine crystals sublimate with heating. Even at room temperature. When the heating is a bit stronger than room temperature, iodine changes into a beautiful violet-colored gas. But don't breathe any of it. It's quite poisonous.
09-25-09, 10:08 PM
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One of the trendy things you can spend (waste) your money on in the automotive world is to have your tires pumped up with pure nitrogen. This is supposed to keep your tires inflated longer than regular air, and also supposedly has other benefits.
So I was wondering, since CO2 inflators have the opposite problem (CO2 leaks out faster than air, plus it's a greenhouse gas), why hasn't anyone made a portable nitrogen inflator system for bike tires? Is it purely cost, or is there some technical problem with bottling nitrogen in those little cartridges?
So I was wondering, since CO2 inflators have the opposite problem (CO2 leaks out faster than air, plus it's a greenhouse gas), why hasn't anyone made a portable nitrogen inflator system for bike tires? Is it purely cost, or is there some technical problem with bottling nitrogen in those little cartridges?
09-25-09, 10:13 PM
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Not until you stomped in here and implied this. Don't you have some flies in need of having their wings removed?
09-25-09, 10:21 PM
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This morning, I gave it 120%
09-26-09, 04:39 AM
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09-26-09, 05:37 AM
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Right on! I could always spot a lousy and ignorant teacher in a school. They were the ones who told you how stupid you are for asking a question. Fact of the matter being they didn't know the answer. Rather than saying something to the effect of: "I don't know. Let's find out." they would call you a moron in an intimidating voice and cause the other students to giggle and laugh at you.I called out a math teacher once. He went berserk and ordered me into the hallway. He told me "I'm gonna beat the sh** out of you for making me look bad!" Then he ordered me to the principal's office. As I started walking away he said: "Stop! You're making me look like a fool!" Then he made a fist and I pulled a knife out of my boot and continued walking - backwards - away from this twit.
09-26-09, 10:17 AM
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+10! Right on! I could always spot a lousy and ignorant teacher in a school. They were the ones who told you how stupid you are for asking a question. Fact of the matter being they didn't know the answer. Rather than saying something to the effect of: "I don't know. Let's find out." they would call you a moron in an intimidating voice and cause the other students to giggle and laugh at you.
I called out a math teacher once. He went berserk and ordered me into the hallway. He told me "I'm gonna beat the sh** out of you for making me look bad!" Then he ordered me to the principal's office. As I started walking away he said: "Stop! You're making me look like a fool!" Then he made a fist and I pulled a knife out of my boot and continued walking - backwards - away from this twit.
Right on! I could always spot a lousy and ignorant teacher in a school. They were the ones who told you how stupid you are for asking a question. Fact of the matter being they didn't know the answer. Rather than saying something to the effect of: "I don't know. Let's find out." they would call you a moron in an intimidating voice and cause the other students to giggle and laugh at you.I called out a math teacher once. He went berserk and ordered me into the hallway. He told me "I'm gonna beat the sh** out of you for making me look bad!" Then he ordered me to the principal's office. As I started walking away he said: "Stop! You're making me look like a fool!" Then he made a fist and I pulled a knife out of my boot and continued walking - backwards - away from this twit.
