Thursday, January 18, 2007

Velocity Dumb

So the ADiots have noticed my earlier post about them. They seem to be peeved in particular that I have such trouble understanding the wierd autodynamics velocity sum equation. Its not just me thats having problems though, a guy called Will is pointing out that the way they do things is wrong, but to no avail so far, its actually interesting reading how they deal with his well reasoned points, mostly by ignoring them, its like a bunch of five year olds sticking their fingers in their ears and going "I'm not listening to you" check out the first post here. They even accused him of being me, he isn't, I don't use sock puppets, If I wanted to talk to them directly I would.

To those just joining the fun the velocity sum equation is what those of us in the reality based world use to work out how different systems appear from different viewpoints. To illuminate this I'm going to use the example they themselves have provided on their own website (here), I've changed the numbers slightly but the result is unaffected.

Imagine you are a travelling in a slow car along a long straight road, you are moving at 10km/h according to your speedometer. You are overtaken by another car, which from your viewpoint appears to be travelling at 10km/h. The question is how fast does the other driver think they are travelling at? What does their speedometer read?

In classical mechanics the answer is simple you simply sum the velocities of the two cars to work out that the second car is travelling at 20km/h. In special relativity the equations are not so simple but at low velocities (those a bit less than the speed of light) special relativity gives an answer identical to classical mechanics, within any reasonable measurement.

The autodynamics equation for velocity sums is somewhat non standard and in this case gives a velocity of... wait for it... 28.28 km/h (Correction: 14.14km/h, see next post)for the car overtaking you. If the driver looks at his speedometer it reads 28.28 km/h.

Now the point Will, and in fact several others have tried to make to the ADiots is that this is plainly nonsense. We can measure this easily, just get yourselves two cars and a speedcamera in one of them and you can prove this is not the case. It happens every day when police are chasing speeding cars, if the ADiots were right, the police would always be measuring significantly higher velocities for the other car than they were, now some out there may claim that is the case, but I've never heard of a sharp lawyer trying to use this one to get out of a speeding ticket.

So what do the ADiots themselves have to say about this? Well their response are generally along the lines of, "your thinking like a relativist", or that AD conserves energy when relativity doesn't (it does btw), essentially anything to distract from the central point. What good is a theory of motion if it doesn't work in the real world? I'm waiting for the ADiots to explain this one. Feel free to do it here in a comment, I'll post it for all to see.

5 comments:

Anonymous said...

You blog is full of references to stupidity, yet you can't even plug numbers into an equation correctly, much less understand the difference between kinematics and dynamics (apparently you couldn't read past the "Auto" of AutoDYNAMICS).
By the way, if you were to plug the velocities in your example into the AD equation, you would get 14.14 km/hr.
Does this mean that the kinematics velocity sum of 10+10=20, is somehow mathematically incorrect? Of course not. Do you really believe that's what it meant? Really? Did you even bother reading the link that you posted?
Maybe you should have actually put some effort into studying AD before you made yourself look so silly.

jps said...

you guys are so thick it offends me

chenxin said...

20150713 chenxin
gucci uk
ray ban sunglasses
true religion jeans
louis vuitton pas cher
louis vuitton
ray ban glasses
oakley sunglasses wholesale
burberry sale
oakley sunglasses outlet
gucci borse
true religion outlet
hollister clothing
cheap ray ban sunglasses
air max 90
prada outlet
soccer shoes
pandora jewelry
coach outlet online
michael kors outlet
nike air force
pandora outlet
tory burch handbags
louboutin
coach factory outlet
longchamp handbags
ray ban sunglass
air max 95
coach outlet online
coach outlet online
fitflops outlet
rolex watches
chanel bags
burberry outlet online
polo ralph lauren outlet
toms shoes outlet
michael kors outlet
chaussure louboutin
chanel handbags
cheap oakleys
burberry scarf

Lili Wang said...

20150723wanglili
true religion outlet
ray ban wayfarer
louis vuitton handbags
louis vuitton handbags uk
louis vuitton outlet
louis vuitton handbags
louis vuitton handbags
hermes belts
coach outlet stores online
toms.com
coach factory outlet
lebron 11
gucci outlet online
hollister outlet
cheap jerseys wholesale
oakley sunglasses
coach outlet online
michael kors handbags
tory burch outlet online
louis vuitton
lv bags
chanel outlet online
oakley sunglasses
louis vuitton outlet
air max uk
louis vuitton outlet
celine bag
hollister outlet
burberry outlet online
cheap chi straighteners
michael kors outlet

Fangyaya said...

louis vuitton outlet
coach outlet
michael kors outlet clearance
polo shirts
oakley vault
kobe shoes 11
michael kors handbags
michael kors handbags
michael kors handbags
lebron james shoes
air jordan 13
nike nfl jerseys
ray bans
christian louboutin outlet
pandora jewelry
michael kors outlet online
michael kors outlet
louis vuitton
rolex watches
coach outlet store online clearances
oakley sunglasses
louis vuitton outlet
burberry outlet
christian louboutin outlet
coach factory outlet
coach outlet online
vans outlet
coach outlet
coach outlet
louis vuitton outlet
ray-ban sunglasses
jordan shoes
michael kors outlet clearance
polo ralph shirts
nike uk
toms wedges
celine bags
polo ralph lauren outlet
cheap ray ban sunglasses
rolex watches
20167.20chenjinyan