Incredibly bad look for this community.

[Paulo Mesquita]

15 minutes ago, Planemo said:

Well, aside from the meaning of life, the universe and everything, 42 (minutes) is also how long it would take you to fall through the centre of the earth and arrive at the other side. Assuming your tube had a vacuum of course, and you didn't touch the sides.

If that hasn't derailed the thread enough, nothing will.

It depends... you forget to include in the equation the fact that we're all traveling at I've 2 million miles per second across the universe. 

[RockyTop]

1 hour ago, Paulo Mesquita said:

@ShanesPlanet is just one guy out in the country... Because everyone is afraid of getting close to him 😂😂😂😂😂😂

@ShanesPlanet Hey man it's working.  I'll keep playing the banjo, You do what you do and we can keep all of this beautiful land to ourselves. 

Edited July 10, 2021 by RockyTop

[The Fat Unicyclist]

1 hour ago, Planemo said:

Well, aside from the meaning of life, the universe and everything, 42 (minutes) is also how long it would take you to fall through the centre of the earth and arrive at the other side. Assuming your tube had a vacuum of course, and you didn't touch the sides.

If that hasn't derailed the thread enough, nothing will.

I take it that you haven't met Alexander Klotz then... https://www.sciencemag.org/news/2015/03/how-long-would-it-take-you-fall-through-earth

Spoiler alert: He can do it in 38:11 - I'm guessing he rides a Sherman.

BTW: Why aren't you allowed to touch the sides?

Edited July 10, 2021 by The Fat Unicyclist

[.....]

30 minutes ago, The Fat Unicyclist said:

I take it that you haven't met Alexander Klotz then... https://www.sciencemag.org/news/2015/03/how-long-would-it-take-you-fall-through-earth

Spoiler alert: He can do it in 38:11 - I'm guessing he rides a Sherman.

BTW: Why aren't you allowed to touch the sides?

[Mark13i]

2 hours ago, Paulo Mesquita said:

It depends... you forget to include in the equation the fact that we're all traveling at I've 2 million miles per second across the universe. 

Chriull - tell me it's not true.  Please.

Inconsistent with the laws of physics

[Planemo]

2 hours ago, Paulo Mesquita said:

It depends... you forget to include in the equation the fact that we're all traveling at I've 2 million miles per second across the universe. 

And how is that relevant to the example?!

1 hour ago, The Fat Unicyclist said:

I take it that you haven't met Alexander..

You're right, I've never met him. I had read his density theory though. I just knew some smart arse would google the 42min example and throw up his 38min estimate just to mess up the play on '42'.

1 hour ago, The Fat Unicyclist said:

BTW: Why aren't you allowed to touch the sides?

Friction?

In any event, an 18,000mph friction burn would lead to one hell of a graze. Even worse than what a Sherman could give

 

[Ek.]

3 hours ago, Planemo said:

Friction?

In any event, an 18,000mph friction burn would lead to one hell of a graze. Even worse than what a Sherman could give

 

ATGATT

[mrelwood]

5 hours ago, The Fat Unicyclist said:

Spoiler alert: He can do it in 38:11 - I'm guessing he rides a Sherman.

Nah, I’m sure he just cheats by starting closer to the pole. If I’d be doing a trip like that, I’d like all my money’s worth and begin (and end) at the equator. I’m sure that would take me exactly 42 minutes, because I trust Douglas way more than some random Alexander.

7 hours ago, Paulo Mesquita said:

It depends... you forget to include in the equation the fact that we're all traveling at I've 2 million miles per second across the universe. 

 No equation required for that one though. Speed doesn’t affect gravity.

5 hours ago, Mark13i said:

Chriull - tell me it's not true.  Please.

Inconsistent with the laws of physics

 How come? If you’re inside a train, it doesn’t matter whether the train is still or traveling at 2M mph, you can still toss a ball with one another etc and not notice anything.

The train track would have to be dead straight though, the curvature of the earth (if you believe in such a thing ) would change things quite a bit.

Nothing is still (staying in the same coordinates) of the universe. The globe rotates around itself every day, and around the sun every year, our solar system rotates around the black hole at the center of our galaxy, and the closest galaxy Andromeida is at a collision course with ours. (It will take a good while to reach us though...)

Edited July 11, 2021 by mrelwood

[The Fat Unicyclist]

34 minutes ago, mrelwood said:

and the closest galaxy Andromeida is at a collision course with ours.

Bugger... if that Andromeida thingy hits my wheels, are the cells likely to achieve thermal runaway?   

Perhaps I should think about having a fire sale...   

[Sumako]

[mrelwood]

3 hours ago, The Fat Unicyclist said:

Bugger... if that Andromeida thingy hits my wheels, are the cells likely to achieve thermal runaway?   

Eventually yes. But I’d worry more about the grip on the regular tires. As the Andromeida gets close, gravity will go haywire, and less gravity -> less grip. If I were you, I’d invest in selling EUCs with off-road tires! It will surely pay off… eventually.

 Oh, and good headlights! The V11 should be a big hit when the sunshine gets blocked.

Edited July 11, 2021 by mrelwood

[Tasku]

I don't know about rest of you but this falling through earth in vacuum 'thing' sounds pretty thrilling. But I feel uncertain, what to wear.. How cold would this vacuum be? Vacuum in space is soo freaking cold.. 

I can only assume this is part of the intergalactic highway project. Earth being in the way and all, sounds nice that there be quick way to get past earth, with that vacuum.

But surely there should be customs and bureaucratic procedures involving free falling through earth? Assuming the planet shant not crack like egg during the building phase, it would be nice additional tax revenue to all the countries. 

 

Just few questions in my mind:

Will the liquid hot metals (center of earth) cool-off with this vacuum pipe?

Will the vacuum-pipe building project change the rotation or axle of earth?

What would happen if the liquid hot metals freeze with this new vacuum tube?

Where is the nearest earth 2 again? And how much for ticket? 

My shoesize is 42.. and half. Was the calculation correct? 

[Tasku]

3 hours ago, Sumako said:

Banning people having kids.. PROBLEM SOLVED! Look I used 'their' toolset and now I am the proud problem solver! YAY!

Next I am going after sugar, coffee..

[The Fat Unicyclist]

1 hour ago, Tasku said:

My shoesize is 42.. and half. Was the calculation correct? 

Yes, the extra half-size will be offset by global warming... Assuming (of course) that you have had your COVID vaccine!   

[Mark13i]

Have you changed the dealer? 

[Paul A]

The next generation of PEV's may not be a vastly improved EUC.

The Sherman may be approaching the ceiling of capabilities before it becomes impractical in terms of weight, cost, diminishing rate of utility return, market demand, substitutes of conventional vehicles already in existence.

 

Current energy densities achievable for Li-Ion are in the range of 100-265 Wh/kg, cost of approximately $140 USD per 1kWh.

Elon Musk is R&D to develop and produce in-house Li-Ion batteries with energy density of 400Wh/kg, with cost of approximately $100 USD per 1kWh.

His primary objective is to enable the possibility of electric battery commercial passenger planes, in terms of practicality and economically feasible.

'Tabless' batteries achieving greater range, power, lower costs, vertical expansion with in house production, have been announced for new 4680 batteries.

Technological breakthrough benefits will likely filter through to EUC's in time.

 

The next generation of PEV's may thus be personal drones.

Commercial drones capable of carrying multiple passengers already exist, and have been trialling in Dubai.

Autonomous flying, operation similar to Uber, using building rooftops as launch and landing pads.

Hsiang  in a recent video featured a couple of personal drones successfully flying in the USA, they appeared to be DIY homemade very early prototypes, with limited flight times and safety.

 

 

[Paulo Mesquita]

6 hours ago, mrelwood said:

 

 No equation required for that one though. Speed doesn’t affect gravity.

 

@mrelwood, buddy, quite correct. But gravity does affect speed, in particular... and this is a recent astronomical discovery, the gravity of stars ans planets affect the speed of the light that travels though the cosmos. It's like an elastic " bungee jumping effect".

So in short, you're standing on Point A, say Earth, and you're looking at a given galaxy, Point B, 35 Million light years away. But in the trajectory of its light there are other stars between points A and B. Then that same light that your eye and brain are capturing accelerates when its approaching and passing by a close star on that light path, and its gravity speeds up the light. Once the light of the far away galaxy passes that star, it's gravity pulls it back, decelerating the light, until it loses itself from the grip of that star's gravity effect. Then the light that youve been observing resumes its normal speed. Einstein, in his grave, has complained quite a bit over this new discovery...there goes his theory 😁

Well it doesn't get any more off-topic than this. Sorry friends. I'm sure @ShanesPlanetis going, from now on, to look through his telescope with a different perspective. Elastic Bungee Jumping light it is Master Yoda... 

[Paul A]

Doppler effect, red shift, expansion of universe.

Keppler third law, slingshot around moon or planet.

Shortest/quickest path may not be a straight line.

[Mark13i]

7 hours ago, mrelwood said:

How come? If you’re inside a train, it doesn’t matter whether the train is still or traveling at 2M mph, you can still toss a ball with one another etc and not notice anything.

"Special relativity" does not allow.

The example of a train does not reflect the reality - speeds do not add up, with increasing speed relativistic phenomena begin to prevail;  change of the geometry of space (shrinks to zero at the speed of light), stopping time, infinitely great energy.  needed to reach the speed of light, etc.

help Chriull explain 

Edited July 11, 2021 by Mark13i

[Mark13i]

35 minutes ago, Paul A said:

The next generation of PEV's may not be a vastly improved EUC.

The Sherman may be approaching the ceiling of capabilities before it becomes impractical in terms of weight, cost, diminishing rate of utility return, market demand, substitutes of conventional vehicles already in existence.

 

Current energy densities achievable for Li-Ion are in the range of 100-265 Wh/kg, cost of approximately $140 USD per 1kWh.

Elon Musk is R&D to develop and produce in-house Li-Ion batteries with energy density of 400Wh/kg, with cost of approximately $100 USD per 1kWh.

His primary objective is to enable the possibility of electric battery commercial passenger planes, in terms of practicality and economically feasible.

'Tabless' batteries achieving greater range, power, lower costs, vertical expansion with in house production, have been announced for new 4680 batteries.

Technological breakthrough benefits will likely filter through to EUC's in time.

 

The next generation of PEV's may thus be personal drones.

Commercial drones capable of carrying multiple passengers already exist, and have been trialling in Dubai.

Autonomous flying, operation similar to Uber, using building rooftops as launch and landing pads.

Hsiang  in a recent video featured a couple of personal drones successfully flying in the USA, they appeared to be DIY homemade very early prototypes, with limited flight times and safety.

 

 

I really support the artificial intelligence to manage the EUC engine - to be able to guess which rider gestures are intended and which are the result;  loss of balance, wind, obstacles.  To intelligently monitor electrical parameters, anticipating failure of the EUC for sufficient time to stop.

[Paul A]

Yes, AI for EUC would be a great idea, similar to stability control on cars.

Wondering why there is not a sensor to detect total loss of rider weight on pedals, and cut off motor to prevent a wheel from careening onwards after an accident.

With allowances for riders that like to jump.

 

[Mark13i]

25 minutes ago, Paul A said:

Yes, AI for EUC would be a great idea, similar to stability control on cars.

Wondering why there is not a sensor to detect total loss of rider weight on pedals, and cut off motor to prevent a wheel from careening onwards after an accident.

With allowances for riders that like to jump.

 

Yes, I thought about it.  but not such a simple contactor as in the hoverboard, only two weight sensors in the pads.  Handling these sensors is the first task for AI.

Edited July 11, 2021 by Mark13i

[mrelwood]

3 hours ago, Tasku said:

I don't know about rest of you but this falling through earth in vacuum 'thing' sounds pretty thrilling. But I feel uncertain, what to wear.. How cold would this vacuum be? Vacuum in space is soo freaking cold..

A vacuum doesn’t have matter to transport the heat/coldness, so 100•C in a vacuum wouldn’t be nearly as bad as in a sauna. But the tube would run through the center of the earth, which is a pretty hot place. Depending on the insulation of the tube, you could even be ok with regular clothes.

3 hours ago, Tasku said:

But surely there should be customs and bureaucratic procedures involving free falling through earth?

More than that, as soon as local bicycle associations realize how fast one can travel in the tube, they would do their best trying to ban the whole thing.

3 hours ago, Tasku said:

Will the liquid hot metals (center of earth) cool-off with this vacuum pipe?

Slightly, yes. But since the tube must be well insulated for travelers to be able to pass, this will likely be too little to matter.

3 hours ago, Tasku said:

Will the vacuum-pipe building project change the rotation or axle of earth?

If the pipe goes through the earth from pole to pole, it shouldn’t disturb the rotating of the core and the magnetic fields. If it goes from equator to equator, it could disturb the rotation and maybe even cause really funny effects in the long run.

3 hours ago, Tasku said:

What would happen if the liquid hot metals freeze with this new vacuum tube?

If the whole core of the earth would freeze, that would make the earth a  really really cool place to be in.

3 hours ago, Tasku said:

Where is the nearest earth 2 again? And how much for ticket?

Europa, a moon of Jupiter was a candidate at some point. Watch the magnificent movie “Interstellar” for additional candidates!

 

59 minutes ago, Paul A said:

The Sherman may be approaching the ceiling of capabilities before it becomes impractical

Absolutely. While it’s the wheel of choice for many NYC speedsters, outside of NYC the riders’ personal limits tend to limit the max speed at 40-60km/h. And 100 miles of range… There are all kinds of e-vehicles sold successfully with less range. The weight and price is just not worth it.

 

46 minutes ago, Mark13i said:

"Special relativity" does not allow.

Hmm. I need to read a bit too refreshed my memory!

 

[Mark13i]

18 minutes ago, mrelwood said:

If the whole core of the earth would freeze, that would make the earth a  really really cool place to be in.

If that happened, you would never see the aurora borealis again.  Would you be able to live without the aurora? 

Edited July 11, 2021 by Mark13i

[mrelwood]

1 hour ago, Mark13i said:

"Special relativity" does not allow.

The way I understand:

1. The laws of physics are invariant (that is, identical) in all inertial frames of reference(that is, frames of reference with no acceleration).

( https://en.m.wikipedia.org/wiki/Special_relativity )

 is that the train example is a perfect one. In a moving train all frames of reference move at the same speed, so laws of physics behaves as of the train wasn’t moving at all. When observed from inside the train of course.

If I got second part correctly, speed of light is not a capped maximum speed that nothing can surpass in relation to some static point in the universe. A light from the back of the train car would reach me without red shift, doppler, or other effects, no matter if the train was still or moving at half light speed. Looking at it from the station platform however would show all the funky phenomenas.

 The light travels in the earth’s atmosphere at a speed of light in relation to the light source, no matter how fast the earth itself flies through space.

But deformation of the time-space is something I haven’t been able to wrap my head around , but I understand that it should just as well depend on the speed and acceleration between the points of reference.

 

Edit:

”Would you be able to live without the aurora? ”

Hmm. Let me think…  My fingers do get cold easily, so I think that would bother me more if the earth froze.

Edited July 11, 2021 by mrelwood