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Captain's Log 21/12/12:

alfamav

GROUP: Members

POSTS: 54

Report this May. 22 2013, 12:55 am

 


Brianstorm999, can I step in here with a question:


You said (April 25th) that for particles, or wave-particles as you call them:


 


Energy x Diameter is constant.


 


But this is a simple, linear relationship.


So if energy is added to a particle, then it gets smaller, but it also goes faster?


Can it go faster without limit?


Beyond the speed of light?

brianstrom999

GROUP: Members

POSTS: 85

Report this May. 29 2013, 3:16 am

 


 


Ensign:


To answer your first question: Yes, adding energy to a wave-particle will increase its total energy (Kinetic Energy + Potential Energy). The wave-particle will become smaller in accordance with the "Energy x Diameter is Constant" equation.


To answer your second question: Adding energy to an object or wave-particle will usually change both its Kinetic Energy and Potential Energy.


However, you must forget your old Earth equations of the form 1/2mv^2 or mgh and the artificial concepts of "mass" and "gravity".


You must imagine you are on a Spacecraft and think in terms of Orbital Equations. Are you OK with that?

alfamav

GROUP: Members

POSTS: 54

Report this Jun. 01 2013, 4:36 am

 


Yes, Mr Spock, please continue with your analysis.


Orbital motion sounds OK, as long as it's not too mathematical or Vulcan!


LL&P

brianstrom999

GROUP: Members

POSTS: 85

Report this Jun. 02 2013, 5:39 am

 


 


Ensign:


We can use principles and diagrams rather than mathematical equations.


Principle 1:


Here's a diagram for an object in orbit around a Potential Energy Well (such as the Earth).


Orbits are usually elliptical.


The total energy of the object remains constant, but individual components (KE and PE) vary with its orbital position.



 

brianstrom999

GROUP: Members

POSTS: 85

Report this Jun. 17 2013, 12:14 pm

 


Principle 2: Total Energy


We must remember that the Earth and the green satellite are both orbiting the Potential Energy Well of the Sun, and that the Solar System is orbiting the galactic Potential Energy Well that is the Milky Way etc.etc.


So the total energy of the satellite is more complex than we first imagined.


In fact, we must conclude that we cannot measure the satellite's speed, motion and total energy absolutely, but only relative to other objects.


 


brianstrom999

GROUP: Members

POSTS: 85

Report this Jun. 20 2013, 5:53 am

 


Principle 3:


So how does the object know how fast it's going in absolute terms?


How does it know when it's almost travelling at the speed of light and cannot go any faster?


Answer: It doesn't.


 


So, logically, if an object is approaching a large Potential Energy Well such as a black hole, its Kinetic Energy will increase and its speed will increase and, if the well is deep enough, the object's speed will exceed the speed of light!


LL&P.

brianstrom999

GROUP: Members

POSTS: 85

Report this Jun. 20 2013, 5:55 am

Palomar1932

GROUP: Members

POSTS: 46

Report this Jun. 21 2013, 7:57 am

 


Way to go, Mr Spock.


That's what I wanted to read - something contentious!


Travelling faster than the speed of light!!!


LL&P

alfamav

GROUP: Members

POSTS: 54

Report this Jun. 22 2013, 1:32 am

 


Yes that's good news Mr Spock.


But can humans survive near a black hole?


What would we see?


LL&P

brianstrom999

GROUP: Members

POSTS: 85

Report this Jun. 23 2013, 10:38 am

 


Not suggesting you should try going into, or too near, a black hole, but it serves to establish the principle of faster-than-light speed.


Observations of the faster-than-light object are predictable. There is a "bow-wave" which has compressed light waves appearing as a brief "flash" or photon-burst. It's similar to the sonic boom from a jet-plane travelling faster than the speed-of-sound.


If a jet plane is accelerating towards you and going through the sound barrier, the frequency pitch of the engines increases towards infinity. Then you hear a sonic boom. Then a very low frequency pitch as it moves away from you.


Similarly, observations of the faster-than-light-speed object are Doppler-shifted. On approach, as it goes faster, the blue-shift tends to infinity. On exceeding the speed of light, you will only see it as it was, not as it is. Then a photon-burst. Then, as it recedes, the image will be red-shifted in the usual way.


Side views of the object will be distorted as predicted by your Relativity Theory.


LL&P

brianstrom999

GROUP: Members

POSTS: 85

Report this Jun. 23 2013, 10:48 am

brianstrom999

GROUP: Members

POSTS: 85

Report this Jun. 25 2013, 12:45 am

 


A Starship can exceed the speed of light if its engines are powerful enough.


A nuclear-powered, Potential Energy Drive, firing exhaust particles at over 10^10 light-speed is the most efficient (Warp Drive).


Engine-power can be aided by using a fast-moving massive star as a sling-shot.


If the star is already travelling at half light-speed relative to your destination, then a single sling-shot can get you above light-speed.


Multiple sling-shots will add more.


Your ship's computers can calculate the optimum path for minimum journey time.


 


LL&P


 

brianstrom999

GROUP: Members

POSTS: 85

Report this Jun. 25 2013, 12:46 am