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IMHO, referring to any physics which is described in peer reviewed physics journals as "science fiction" is a very bad misuse of the term "science fiction." Anything taught at places like MIT and Harvard or being developed by places like NASA can hardly be called science fiction even though it may fit the definition its bad juju to do so
To : Pimby Phi & Janus Effect Gentlemen , it's Hammer Time !Consider a free-floating toy car racetrack , complete w/several pinballs circulating around it separately . Momentarily , a friction-pad pops up , and slows one of the balls way down . A series of collisions then ensues , which cause the entire track to slowly move in one direction . If the track mechanism regularly brings the ball's back up to speed , the process can be repeated endlessly . This , also , would constitute a DEFACTO reactionless drive . It might have 1% efficiency when refined , versus the .00000001% efficiency of a photon drive . The Photonic Rocket definitely " Can't Touch This ! " .As was previously agreed , R.D.s work by ejecting/transmuting energy ( not matter ) uni-directionally . I will take your bows now . P.M.
To:KryptidMust have logic , live by it !Speaking of planetary systems , how do you like that Earth-Moon system ? Much of Earth's initial angular momentum has been transferred to Luna , BUT much of it was converted to heat in the process . Were it a perfect transfer , the E.-M. system would be in a different location , with a different momentum . If you now spun the Earth in the opposite direction , the opposite effect would occur . Bottom line , destroying energy of momentum works as well as removing mass. Sounds like a propellantless rocket to me ! Hokay , next victim ! P.M. P.S.-" l'm freakin' Bobby Fisher ! "
To : Janus I aplaud your numbers ! Great calculating ! The only accurate value I didn't see was the thrust-momentum value of the generated EM radiation . This would contrast greatly with the momentum-energy value consumed to create said EM radiation . Same energy value , radically different " push " values depending on form . There are mechanical tricks to manipulate these forms to produce uneven push forces effecting an ENTIRE system , but I will not give up my secrets without FULL credit !
One hint to cred. my stuff ; two identical baseballs are thrown simultaneously & identically at the same wall. One hits a wrestling mat , & one hits a hardwood door . Do they bounce back the same ?
This be where my point becomes clear . One ball bounces back with 90% of it's original momentum , the other with 10% . Where did that missing ENERGY of momentum go ? Partly into momentum transfer to the wall , and partly into waste heat radiated omnidirectionally from the impact points . Same throw , different momentum transfer , same closed system . Properly arranged , this gives you uneven momentum transfer for the system as a whole . The waste heat is a dead loss , momentum-wise . Do the math and shock yourself ! Otay , point made , outa-ear !.....P.M.
To : Janus Both your knowledge of S.R. , and your calculating abilities , are laudable . I will give you an illustration/hint that may hit closer to home . Imagine that you are at a billiards table . You have two normal billiard balls , and a same-weight & size sand ball , wrapped in cloth . First you place billiard ball # 1 on the cue spot . You strike it with b.b. # 2 dead-center at 50 mph. , you then put the sand ball on the cue spot . You repeat the process . What are the speeds/momentum energies of b.b. # 2 & the sand ball ? Oh , and Janus , CAN YOU HEAR ME NOW ? I await your # crunches . P.M.
Janus , your faith in your paradigm is extraordinary
I will transfer my example to the 0 G. Space Station , and approximate some numbers for you . After it is struck , b.b. # 2 flies forward at 45 mph. . The sand-ball , however , flies forward at <20 mph. . Nothing affects the table. The momentum-energy left in the first strike balls is ~3 times that left in the second pair . The difference is contained in the friction heat the sand-ball generated . Opposing these two actions would indeed produce asymmetrical push upon the receiving walls . Massive-Wall physics will give you the #s here. Go ahead , splurge ! This number-fest will surprise you !Let 'er rip , number-cruncher ! PM