Rockets need an atmosphere to propel | |
Balance242 (OP) User ID: 76708078 Canada 01/22/2019 08:49 PM Report Abusive Post Report Copyright Violation | Wrong. Quoting: Dr. Deplorable Astromut The booster rockets completely null their horizontal velocity while in space and then come back to land at the launch site. Ergo, rockets do not need an atmosphere to propel themselves. Do not accuse this footage of being fake. I filmed it myself. Hey Dr. Astromut, any chance you can trace OP's IP. He joined 1/3/2019. $10 says he's a shill. does he work for the nsa? why do you need my location? Balance242 |
Arawn User ID: 72744137 United States 01/22/2019 08:54 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 77305190 United States 01/22/2019 09:11 PM Report Abusive Post Report Copyright Violation | Wrong. Quoting: Dr. Deplorable Astromut The booster rockets completely null their horizontal velocity while in space and then come back to land at the launch site. Ergo, rockets do not need an atmosphere to propel themselves. Do not accuse this footage of being fake. I filmed it myself. Hey Dr. Astromut, any chance you can trace OP's IP. He joined 1/3/2019. $10 says he's a shill. does he work for the nsa? why do you need my location? We all work for the NSA. Ever heard of Echelon? You can't be not heard. |
.Rest. User ID: 76853663 United States 01/22/2019 09:19 PM Report Abusive Post Report Copyright Violation | Wrong. Quoting: Dr. Deplorable Astromut The booster rockets completely null their horizontal velocity while in space and then come back to land at the launch site. Ergo, rockets do not need an atmosphere to propel themselves. Do not accuse this footage of being fake. I filmed it myself. Hey Dr. Astromut, any chance you can trace OP's IP. He joined 1/3/2019. $10 says he's a shill. does he work for the nsa? why do you need my location? We all work for the NSA. Ever heard of Echelon? You can't be not heard. There. Out of system yet? (sorry, but I'd like to be let know when/if my a$$hole is showing too.) . . . . . Dragonchain |
Anonymous Coward User ID: 77305190 United States 01/22/2019 09:35 PM Report Abusive Post Report Copyright Violation | ... Quoting: Remedial_Rebel Hey Dr. Astromut, any chance you can trace OP's IP. He joined 1/3/2019. $10 says he's a shill. does he work for the nsa? why do you need my location? We all work for the NSA. Ever heard of Echelon? You can't be not heard. : There. Out of system yet? (sorry, but I'd like to be let know when/if my a$$hole is showing too.) Someone who truly understands what's really going on. There truly is not an em field radiation signature that isn't captured on Earth. Our world is covered completely and you cannot hide from Uncle Sam.Your tax dollars at work ensured that. |
.Rest. User ID: 76853663 United States 01/22/2019 09:38 PM Report Abusive Post Report Copyright Violation | : There. Out of system yet? (sorry, but I'd like to be let know when/if my a$$hole is showing too.) Someone who truly understands what's really going on. There truly is not an em field radiation signature that isn't captured on Earth. Our world is covered completely and you cannot hide from Uncle Sam.Your tax dollars at work ensured that. I wasn't arguing anything, if you look back through page 6 you'll see I have no argument one way or another but enjoy reading and find it all actually absurdly comical... I'm just saying it may be perceived by some as disingenuous when you append flowers to everything, even in posts that clearly otherwise exude anger/sarcasm/stress/insult/fluster. also, I haven't "worked" for any taxable income since I began learning of the probably 99% of tax money going toward decption/fuckery many years ago. (around age 18, c.a. 2008) So no sorry, not my tax $, your's maybe, and given the work history you've claimed here I'd say it's likely, but no not even one bit of mine. I'm just a giggly observer who made way too much with computers my own way early on. I wouldn't say I'm a "Alabama University" student either, though I personally think that is probably as decent a school as any these days. I do have high degrees in mathematics and physics in what are considered generally as top schools in the US, but as soon as they were achieved I began doing my own learning and realized a great deal to be missing / left out of all those textbooks. So I followed that path pursuing that 'lost' knowledge for a long time, then went back to hard math and computers for a while, then back into the abyss, and so on, until finally winding up somewhat balanced, seeing great truth and validity in both sides. I'm not here to tell anyone what to think only to strongly encourage everyone to NEVER think you know all that is knowable. That's death. Like I said, I think you're both right, you and OP, and I pray very seriously some day such a revelation encounters you both as well. In the 'heavens' or 'sky' is unlimited possibility and potential, though no one reaches it by stepping on others. Last Edited by .Rest. on 01/22/2019 10:28 PM . . . . . Dragonchain |
Balance242 (OP) User ID: 76708078 Canada 01/22/2019 09:43 PM Report Abusive Post Report Copyright Violation | : There. Out of system yet? (sorry, but I'd like to be let know when/if my a$$hole is showing too.) Someone who truly understands what's really going on. There truly is not an em field radiation signature that isn't captured on Earth. Our world is covered completely and you cannot hide from Uncle Sam.Your tax dollars at work ensured that. True. But it’s usually a computer that picks up chatter. Humans only get involved when chatter gets interesting Balance242 |
Dr. Deplorable Astromut Senior Forum Moderator 01/22/2019 09:55 PM Report Abusive Post Report Copyright Violation | ... Quoting: Dr. Deplorable Astromut Wow, thanks for proving you didn't even watch the damn video. You're willfully ignorant, you're not even looking at what I'm showing. You really don't get it. I didn’t see the rocket go into space on the actual footage. You’re just saying they did No, you didn't watch the damn video, you're not even paying attention to what I'm showing you. I wasn't even talking about the second stage of the rocket or the fact that I did track it in space with another telescope. That WASN'T EVEN MY ARGUMENT! THE ENTIRE POINT I WAS MAKING WAS ABOUT THE PART THAT DID COME BACK FROM SPACE YOU FUCKING MORON! You've completely proven you're not interested in the truth and you're not willing to examine the evidence. You're a willful idiot. All I see is the rocket in the blue sky. I don’t see a rocket in space. That's because you're a fucking moron. You already demonstrated you completely missed the point of the video to begin with, I doubt you even watched the whole thing. |
Dr. Deplorable Astromut Senior Forum Moderator 01/22/2019 09:55 PM Report Abusive Post Report Copyright Violation | Wrong. Quoting: Dr. Deplorable Astromut The booster rockets completely null their horizontal velocity while in space and then come back to land at the launch site. Ergo, rockets do not need an atmosphere to propel themselves. Do not accuse this footage of being fake. I filmed it myself. Hey Dr. Astromut, any chance you can trace OP's IP. He joined 1/3/2019. $10 says he's a shill. No, this one's legitimately and deliberately dense. He's beyond help. |
Anonymous Coward User ID: 77305190 United States 01/22/2019 10:22 PM Report Abusive Post Report Copyright Violation | Wrong. Quoting: Dr. Deplorable Astromut The booster rockets completely null their horizontal velocity while in space and then come back to land at the launch site. Ergo, rockets do not need an atmosphere to propel themselves. Do not accuse this footage of being fake. I filmed it myself. Hey Dr. Astromut, any chance you can trace OP's IP. He joined 1/3/2019. $10 says he's a shill. No, this one's legitimately and deliberately dense. He's beyond help. Kicking him to the curb might be the best bet? |
Dr. Deplorable Astromut Senior Forum Moderator 01/22/2019 10:24 PM Report Abusive Post Report Copyright Violation | Wrong. Quoting: Dr. Deplorable Astromut The booster rockets completely null their horizontal velocity while in space and then come back to land at the launch site. Ergo, rockets do not need an atmosphere to propel themselves. Do not accuse this footage of being fake. I filmed it myself. Hey Dr. Astromut, any chance you can trace OP's IP. He joined 1/3/2019. $10 says he's a shill. No, this one's legitimately and deliberately dense. He's beyond help. Kicking him to the curb might be the best bet? Ever village needs its idiot. He's free to be an idiot all he wants. |
Word'sword User ID: 73892843 United States 01/22/2019 10:33 PM Report Abusive Post Report Copyright Violation | : There. Out of system yet? (sorry, but I'd like to be let know when/if my a$$hole is showing too.) Someone who truly understands what's really going on. There truly is not an em field radiation signature that isn't captured on Earth. Our world is covered completely and you cannot hide from Uncle Sam.Your tax dollars at work ensured that. I wasn't arguing anything, if you look back through page 6 you'll see I have no argument one way or another but enjoy reading and find it all actually absurdly comical... I'm just saying it may be perceived by some as disingenuous when you append flowers to everything, even in posts that clearly otherwise exude anger/sarcasm/stress/insult/fluster. also, I haven't "worked" for any taxable income since I began learning of the probably 99% of tax money going toward decption/fuckery many years ago. (around age 18, c.a. 2008) So no sorry, not my tax $, your's maybe, and given the work history you've claimed here I'd say it's likely, but no not even one bit of mine. I'm just a giggly observer who made way too much with computers my own way early on. I wouldn't say I'm a "Alabama University" student either, though I personally think that is probably as decent a school as any these days. I do have high degrees in mathematics and physics in what are considered generally as top schools in the US, but as soon as they were achieved I began doing my own learning and realized a great deal to be missing / left out of all those textbooks. So I followed that path pursuing that 'lost' knowledge for a long time, then went back to hard math and computers for a while, then back into the abyss, and so on, until finally winding up somewhat balanced, seeing great truth and validity in both sides. I'm not here to tell anyone what to think only to strongly encourage everyone to NEVER think you know all that is knowable. That's death. Like I said, I think you're both right, you and OP, and I pray very seriously some day such a revelation encounters you both as well. In the 'heavens' or 'sky' is unlimited possibility and potential, though no one reaches it by stepping on others. Will you marry me? |
Anonymous Coward User ID: 77305190 United States 01/22/2019 10:33 PM Report Abusive Post Report Copyright Violation | : There. Out of system yet? (sorry, but I'd like to be let know when/if my a$$hole is showing too.) Someone who truly understands what's really going on. There truly is not an em field radiation signature that isn't captured on Earth. Our world is covered completely and you cannot hide from Uncle Sam.Your tax dollars at work ensured that. I wasn't arguing anything, if you look back through page 6 you'll see I have no argument one way or another but enjoy reading and find it all actually absurdly comical... I'm just saying it may be perceived by some as disingenuous when you append flowers to everything, even in posts that clearly otherwise exude anger/sarcasm/stress/insult/fluster. also, I haven't "worked" for any taxable income since I began learning of the probably 99% of tax money going toward decption/fuckery many years ago. (around age 18, c.a. 2008) So no sorry, not my tax $, your's maybe, and given the work history you've claimed here I'd say it's likely, but no not mine. I'm just a giggly observer who made way too much with computers my own way early on. Like I said, I think you're both right, you and OP, and I pray very seriously some day such a revelation encounters you both as well. In the 'heavens' or 'sky' is unlimited possibility and potential, though no one reaches it by stepping on others. As a newcomer I'll tell you the same as everyone else who questioned my replies. I always will reply with a at the end of any reply in in regards and deference to an original glp member and my dear friend Suzanne who passed early in the early 2000's. I picked that habit up from her and won't relent it until I too pass. Every reply of mine shall always and forevermore l be punctuated by a Much regards-SOT |
.Rest. User ID: 76853663 United States 01/22/2019 10:38 PM Report Abusive Post Report Copyright Violation | ... Quoting: .Rest. : There. Out of system yet? (sorry, but I'd like to be let know when/if my a$$hole is showing too.) Someone who truly understands what's really going on. There truly is not an em field radiation signature that isn't captured on Earth. Our world is covered completely and you cannot hide from Uncle Sam.Your tax dollars at work ensured that. I wasn't arguing anything, if you look back through page 6 you'll see I have no argument one way or another but enjoy reading and find it all actually absurdly comical... I'm just saying it may be perceived by some as disingenuous when you append flowers to everything, even in posts that clearly otherwise exude anger/sarcasm/stress/insult/fluster. also, I haven't "worked" for any taxable income since I began learning of the probably 99% of tax money going toward decption/fuckery many years ago. (around age 18, c.a. 2008) So no sorry, not my tax $, your's maybe, and given the work history you've claimed here I'd say it's likely, but no not even one bit of mine. I'm just a giggly observer who made way too much with computers my own way early on. I wouldn't say I'm a "Alabama University" student either, though I personally think that is probably as decent a school as any these days. I do have high degrees in mathematics and physics in what are considered generally as top schools in the US, but as soon as they were achieved I began doing my own learning and realized a great deal to be missing / left out of all those textbooks. So I followed that path pursuing that 'lost' knowledge for a long time, then went back to hard math and computers for a while, then back into the abyss, and so on, until finally winding up somewhat balanced, seeing great truth and validity in both sides. I'm not here to tell anyone what to think only to strongly encourage everyone to NEVER think you know all that is knowable. That's death. Like I said, I think you're both right, you and OP, and I pray very seriously some day such a revelation encounters you both as well. In the 'heavens' or 'sky' is unlimited possibility and potential, though no one reaches it by stepping on others. As a newcomer I'll tell you the same as everyone else who questioned my replies. I always will reply with a at the end of any reply in in regards and deference to an original glp member and my dear friend Suzanne who passed early in the early 2000's. I picked that habit up from her and won't relent it until I too pass. Every reply of mine shall always and forevermore l be punctuated by a Much regards-SOT ah ok, unaware of back-story, peace not a newcomer though, here since 2008. . Last Edited by .Rest. on 01/22/2019 10:39 PM . . . . . Dragonchain |
Anonymous Coward User ID: 77305190 United States 01/22/2019 10:40 PM Report Abusive Post Report Copyright Violation | |
hotdogg User ID: 4448622 United States 01/22/2019 10:41 PM Report Abusive Post Report Copyright Violation | No one is this stupid. Has to be a troll to waste our time and you guys are eating it up. Stop doing it! Quoting: Kodiak Island You're totally correct. My first post to this thread was about not wanting to reeducate another- glp wanna be rocket scientist- to the reality of current design and the physics and math backing it up. I failed myself in that regard but I gotta defend my trade and background. I will say though, It takes a lot to beat the stupid out of some of these publicly educated Alabama students. Just goes to show you far we've been failing in educating our youth. Get rid of the pc classes and get back to basics I say , orelse we might be fucked headed into the future Education could sure be better. People should think critically and understand concepts instead of parroting information from NASA. guess what...NASA is not the rocket designer or builder...those rocket are designed and built by private companies...like Boeing and LockMart… they've been building and flying rockets into orbit and beyond for many decades...and there's nothing you can say that will change that fact. Space science, physics, and orbital mechanics is fascinating stuff, if you can wrap your brain around it. |
Anonymous Coward User ID: 77305190 United States 01/22/2019 10:44 PM Report Abusive Post Report Copyright Violation | ... Quoting: Seeker of Truth Someone who truly understands what's really going on. There truly is not an em field radiation signature that isn't captured on Earth. Our world is covered completely and you cannot hide from Uncle Sam.Your tax dollars at work ensured that. I wasn't arguing anything, if you look back through page 6 you'll see I have no argument one way or another but enjoy reading and find it all actually absurdly comical... I'm just saying it may be perceived by some as disingenuous when you append flowers to everything, even in posts that clearly otherwise exude anger/sarcasm/stress/insult/fluster. also, I haven't "worked" for any taxable income since I began learning of the probably 99% of tax money going toward decption/fuckery many years ago. (around age 18, c.a. 2008) So no sorry, not my tax $, your's maybe, and given the work history you've claimed here I'd say it's likely, but no not even one bit of mine. I'm just a giggly observer who made way too much with computers my own way early on. I wouldn't say I'm a "Alabama University" student either, though I personally think that is probably as decent a school as any these days. I do have high degrees in mathematics and physics in what are considered generally as top schools in the US, but as soon as they were achieved I began doing my own learning and realized a great deal to be missing / left out of all those textbooks. So I followed that path pursuing that 'lost' knowledge for a long time, then went back to hard math and computers for a while, then back into the abyss, and so on, until finally winding up somewhat balanced, seeing great truth and validity in both sides. I'm not here to tell anyone what to think only to strongly encourage everyone to NEVER think you know all that is knowable. That's death. Like I said, I think you're both right, you and OP, and I pray very seriously some day such a revelation encounters you both as well. In the 'heavens' or 'sky' is unlimited possibility and potential, though no one reaches it by stepping on others. As a newcomer I'll tell you the same as everyone else who questioned my replies. I always will reply with a at the end of any reply in in regards and deference to an original glp member and my dear friend Suzanne who passed early in the early 2000's. I picked that habit up from her and won't relent it until I too pass. Every reply of mine shall always and forevermore l be punctuated by a Much regards-SOT ah ok, unaware of back-story, peace not a newcomer though, here since 2008. . 2008 really? yea you're a neewbi. Been here since sept 1998. |
.Rest. User ID: 76853663 United States 01/22/2019 10:46 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 77305190 United States 01/22/2019 10:59 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 77305190 United States 01/22/2019 11:08 PM Report Abusive Post Report Copyright Violation | No one is this stupid. Has to be a troll to waste our time and you guys are eating it up. Stop doing it! Quoting: Kodiak Island You're totally correct. My first post to this thread was about not wanting to reeducate another- glp wanna be rocket scientist- to the reality of current design and the physics and math backing it up. I failed myself in that regard but I gotta defend my trade and background. I will say though, It takes a lot to beat the stupid out of some of these publicly educated Alabama students. Just goes to show you far we've been failing in educating our youth. Get rid of the pc classes and get back to basics I say , orelse we might be fucked headed into the future Education could sure be better. People should think critically and understand concepts instead of parroting information from NASA. guess what...NASA is not the rocket designer or builder...those rocket are designed and built by private companies...like Boeing and LockMart… they've been building and flying rockets into orbit and beyond for many decades...and there's nothing you can say that will change that fact. Space science, physics, and orbital mechanics is fascinating stuff, if you can wrap your brain around it. You're half correct. NASA contracted out to rocketdyne and partners, in the early 50's. Currently, they only perfect 80 % of what private companies design as standard. |
.Rest. User ID: 76853663 United States 01/22/2019 11:19 PM Report Abusive Post Report Copyright Violation | Maybe true but I bet I'd qualify as a grandparent if not a great grandparent for you. To me, you're a young whipper snapper. still trying on pull ups after getting out of diapers. Makes sense. I imagine I'd feel the same about someone my grandson or granddaughter's age if I had those years. I'd still not trust my own knowledge/experience/wisdom over the sum of the same between my self and another, I think, even if that other wore diapers. There are glaring holes in both sides of the 'spectrum' or 'story', that even the least intelligent/experienced/wise among us would find tremendous difficulty in not noticing. Last Edited by .Rest. on 01/22/2019 11:26 PM . . . . . Dragonchain |
russ59dd User ID: 75855580 United States 01/22/2019 11:24 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 77305190 United States 01/22/2019 11:36 PM Report Abusive Post Report Copyright Violation | Maybe true but I bet I'd qualify as a grandparent if not a great grandparent for you. To me, you're a young whipper snapper. still trying on pull ups after getting out of diapers. Makes sense. I imagine I'd feel the same about someone my grandson or granddaughter's age if I had those years. I'd still not trust my own knowledge/experience/wisdom over the sum of the same between my self and another, I think, even if that other wore diapers. There are glaring holes in both sides of the 'spectrum' or 'story', that even the least intelligent/experienced/wise among us would find tremendous difficulty in not noticing. Not often I've done this.... but willing to concede, it might appear you are redeemable by your reply. For that non argumentative reply I give you credit for being a stand up dude/dudette. Blessings for you and keep it up. Much easier to attract bees in your life with sugar over vinegar. |
firstclassmoron User ID: 68333203 United Kingdom 01/22/2019 11:57 PM Report Abusive Post Report Copyright Violation | You're floating in a zero-g vacuum, holding a bowling ball. You push the bowling ball away from you as hard as you can. If you were correct, the bowling ball would move away from you, but your position in space would remain unchanged. You're clearly wrong and dumb. Quoting: Frumpelstiltskin Again, fluid movement due to pressure differential is not the same mechanism as throwing a ball. false...they both involv1er accelerating mass, and the resulting reaction....every action has an equal and opposite reaction...same thing applies to rocket engines accelerating hot gasses out of the engines, propelling the craft in the opposite vector... When you drop a ball from your hand from a height, is there an opposite reaction in your hand when the ball falls? Doesn’t it involve accelerating mass? OP I don't think anybody answered this one so here goes: When you hold a ball you apply a force equal to what gravity applies to it but in the opposite direction. When you drop the ball you stop applying this opposing force and the ball falls to the ground. There is no opposing reaction in your hand when you drop it. |
MaxTork User ID: 72936933 United States 01/23/2019 01:45 AM Report Abusive Post Report Copyright Violation | What you were attempting to show with your vacuum cleaner and pipe experiment was the removal of the weight of air in the section of pipe, which you expected to be observable on the scale. The reason it failed is that for every volume of air you removed from the pipe, more simply rushed in from the open end of the pipe, resulting in no net change in weight, or minimal observable change. Had you sealed off the pipe and created a true vacuum with the vacuum pump, you may have seen something, but probably not on an inaccurate bathroom scale, due to the relatively low mass of air. Rockets do work in space. The rocket essentially carries its own mass along to interact with in an equal and opposite way. Onboard is fuel and an oxidizer that expands explosively through the Venturi nozzle, which greatly accelerates the exhaust gas. The equal and opposite reaction occurs here in the nozzle. As the gas is accelerated downward from the point of reference of the nozzle, the nozzle is also accelerated upward from the point of view of the gas. The nozzle is obviously attached to the rocket and the resultant action is away from the exhaust gas. |
(*)(*) User ID: 34231051 United Kingdom 01/23/2019 06:12 AM Report Abusive Post Report Copyright Violation | They use a similar argument to my example of 2 people falling off a cliff and pushing against each other whilst falling. "If you stand on a skateboard and throw a bowling ball forward, that force will push you and the skateboard back. However, because your weight on the skateboard is heavier than that of the bowling ball, you won't move as far. That's the challenge engineers face when designing space engines. Yes, a small amount of thrust does push the spacecraft forward, but it often takes a great deal of fuel to get going anywhere quickly. More fuel means more weight, which adds to the cost of a mission." |
(*)(*) User ID: 34231051 United Kingdom 01/23/2019 06:15 AM Report Abusive Post Report Copyright Violation | |
(*)(*) User ID: 34231051 United Kingdom 01/23/2019 06:20 AM Report Abusive Post Report Copyright Violation | |
Balance242 (OP) User ID: 76708078 Canada 01/23/2019 07:06 AM Report Abusive Post Report Copyright Violation | No one is this stupid. Has to be a troll to waste our time and you guys are eating it up. Stop doing it! Quoting: Kodiak Island You're totally correct. My first post to this thread was about not wanting to reeducate another- glp wanna be rocket scientist- to the reality of current design and the physics and math backing it up. I failed myself in that regard but I gotta defend my trade and background. I will say though, It takes a lot to beat the stupid out of some of these publicly educated Alabama students. Just goes to show you far we've been failing in educating our youth. Get rid of the pc classes and get back to basics I say , orelse we might be fucked headed into the future Education could sure be better. People should think critically and understand concepts instead of parroting information from NASA. guess what...NASA is not the rocket designer or builder...those rocket are designed and built by private companies...like Boeing and LockMart… they've been building and flying rockets into orbit and beyond for many decades...and there's nothing you can say that will change that fact. Space science, physics, and orbital mechanics is fascinating stuff, if you can wrap your brain around it. I would sure like to sell you something that doesn’t work in space if you paid enough. Balance242 |
Balance242 (OP) User ID: 76708078 Canada 01/23/2019 07:10 AM Report Abusive Post Report Copyright Violation | What you were attempting to show with your vacuum cleaner and pipe experiment was the removal of the weight of air in the section of pipe, which you expected to be observable on the scale. Quoting: MaxTork The reason it failed is that for every volume of air you removed from the pipe, more simply rushed in from the open end of the pipe, resulting in no net change in weight, or minimal observable change. Had you sealed off the pipe and created a true vacuum with the vacuum pump, you may have seen something, but probably not on an inaccurate bathroom scale, due to the relatively low mass of air. Rockets do work in space. The rocket essentially carries its own mass along to interact with in an equal and opposite way. Onboard is fuel and an oxidizer that expands explosively through the Venturi nozzle, which greatly accelerates the exhaust gas. The equal and opposite reaction occurs here in the nozzle. As the gas is accelerated downward from the point of reference of the nozzle, the nozzle is also accelerated upward from the point of view of the gas. The nozzle is obviously attached to the rocket and the resultant action is away from the exhaust gas. Now you are making assumptions without proof. With the vacuum cleaner on and pointed close to the pipe, the pressure in the pipe would close to equilibrium with the vacuum hose. Any pressure trying to get in the pipe would go into the vacuum instead as the vacuum maintains low pressure. Secondly, the initial evacuation, the airflow was strong enough to lift a penny against gravity, but there is no observable force on the scale. Balance242 |