Author Topic: Fun Science Videos  (Read 3347 times)

Dave

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Re: Fun Science Videos
« Reply #30 on: July 15, 2017, 01:16:07 PM »
Just for Hermes.

And Icarus.

And Essie.

And . . .

Well, OK then, the rest of you can watch if you like!   :grin:

I think Numberphile is great.

« Last Edit: July 15, 2017, 01:56:42 PM by Gloucester »
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Icarus

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Re: Fun Science Videos
« Reply #31 on: July 15, 2017, 02:24:07 PM »
^ Sensational demonstration......well not sensational to everyone. We math/physics/sciences nerds are turned on by such stuff.

One of my regrets about being so old is that there is so little time left to learn about all those fascinating things. 

...

OK I  will need to come back with something fun. Here is a young woman, who calls herself physics girl. She is completely charming in her own way.  She could relate to, and capture the interests of, high school kids because she makes science fun, even exciting.  There are numerous videos with this young woman. Here is one of them......
 https://www.youtube.com/watch?v=2Ut0F4a9dQk

hermes2015

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Re: Fun Science Videos
« Reply #32 on: July 15, 2017, 09:27:24 PM »
Just for Hermes.

And Icarus.

And Essie.

And . . .

Well, OK then, the rest of you can watch if you like!   :grin:

I think Numberphile is great.



Thank you, Gloucester! I wonder why I find these things so fascinating. I would love to have some of those solids in my toy box.

Dave

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Re: Fun Science Videos
« Reply #33 on: July 15, 2017, 09:42:37 PM »
Just for Hermes.

And Icarus.

And Essie.

And . . .

Well, OK then, the rest of you can watch if you like!   :grin:

I think Numberphile is great.



Thank you, Gloucester! I wonder why I find these things so fascinating. I would love to have some of those solids in my toy box.

Yeah, me too. Unfortunately they are sold out at Maths Gear and no word about future availability.
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Dave

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Re: Fun Science Videos
« Reply #34 on: July 15, 2017, 09:46:37 PM »
I think the fascination comes from a kind of disonance, a tension, between the intellectual understanding and an instinctive disbelief that such shapes can provide a smooth ride.

Think I might get a scooter and make some constant width wheels out of ply for it!
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hermes2015

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Re: Fun Science Videos
« Reply #35 on: July 15, 2017, 09:56:45 PM »
We math/physics/sciences nerds are turned on by such stuff.

One of my regrets about being so old is that there is so little time left to learn about all those fascinating things. 

Add art, music, architecture. Life is far too short.

hermes2015

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Re: Fun Science Videos
« Reply #36 on: July 15, 2017, 09:59:42 PM »
I think the fascination comes from a kind of disonance, a tension, between the intellectual understanding and an instinctive disbelief that such shapes can provide a smooth ride.

Think I might get a scooter and make some constant width wheels out of ply for it!

It would be interesting to make one of those solids as well.
« Last Edit: July 15, 2017, 10:17:45 PM by hermes2015 »

Dave

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Re: Fun Science Videos
« Reply #37 on: July 16, 2017, 01:37:45 AM »
I think the fascination comes from a kind of disonance, a tension, between the intellectual understanding and an instinctive disbelief that such shapes can provide a smooth ride.

Think I might get a scooter and make some constant width wheels out of ply for it!

It would be interesting to make one of those solids as well.

Yeah, been trying to work out how - without a 3D ptinter.
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hermes2015

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Re: Fun Science Videos
« Reply #38 on: July 16, 2017, 03:07:29 AM »
Think I might get a scooter and make some constant width wheels out of ply for it!

Oops, no, that will not give a smooth ride, because the constant width wheels only function smoothly as rollers, but because their centres go up and down, they are not efficient as wheels. I only realized this when I watched this video: https://www.youtube.com/watch?v=2eUWT9cI23o.

Dave

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Re: Fun Science Videos
« Reply #39 on: July 16, 2017, 04:21:11 AM »
Think I might get a scooter and make some constant width wheels out of ply for it!

Oops, no, that will not give a smooth ride, because the constant width wheels only function smoothly as rollers, but because their centres go up and down, they are not efficient as wheels. I only realized this when I watched this video: https://www.youtube.com/watch?v=2eUWT9cI23o.

Oops, forgot that!

Hmm, would it be possible to make a hole in the middle that was the same shape, hole sides a constant dustance from the edge on that radius? Might need to be wide and have "cheek plates" either side. Though the wheel profile could be triangular with the "point" at the rim for ease of turning corners . . . 
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hermes2015

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Re: Fun Science Videos
« Reply #40 on: July 16, 2017, 05:15:12 AM »
Think I might get a scooter and make some constant width wheels out of ply for it!

Oops, no, that will not give a smooth ride, because the constant width wheels only function smoothly as rollers, but because their centres go up and down, they are not efficient as wheels. I only realized this when I watched this video: https://www.youtube.com/watch?v=2eUWT9cI23o.

Oops, forgot that!

Hmm, would it be possible to make a hole in the middle that was the same shape, hole sides a constant dustance from the edge on that radius? Might need to be wide and have "cheek plates" either side. Though the wheel profile could be triangular with the "point" at the rim for ease of turning corners . . .

It would be nice to do a software simulation of it. Or perhaps pencil and paper would be easier.

I was rummaging in some drawers today and found a Spirograph! Forgot I had that from a time when I had more had hair.

Dave

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Re: Fun Science Videos
« Reply #41 on: July 16, 2017, 05:26:58 AM »
Think I might get a scooter and make some constant width wheels out of ply for it!

Oops, no, that will not give a smooth ride, because the constant width wheels only function smoothly as rollers, but because their centres go up and down, they are not efficient as wheels. I only realized this when I watched this video: https://www.youtube.com/watch?v=2eUWT9cI23o.

Oops, forgot that!

Hmm, would it be possible to make a hole in the middle that was the same shape, hole sides a constant dustance from the edge on that radius? Might need to be wide and have "cheek plates" either side. Though the wheel profile could be triangular with the "point" at the rim for ease of turning corners . . .

It would be nice to do a software simulation of it. Or perhaps pencil and paper would be easier.

I was rummaging in some drawers today and found a Spirograph! Forgot I had that from a time when I had more had hair.
Hmm, cardboard cut-out, pencil point as axle, running along a ruler, if it draws a straight and level line .  . Bit like in the video.

Lucky you on the Spirograph, I'm jealous!
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Re: Fun Science Videos
« Reply #42 on: July 16, 2017, 05:46:03 AM »
I think if my Dad wasn't so cynical to athiests and maybe a bit more of a critical thinker, he would really have a good time talking to you guys.
But, uh...well there it is.
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Dave

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Re: Fun Science Videos
« Reply #43 on: July 16, 2017, 06:04:28 AM »
^
^
Ordered a small Spirograph set - glad to see tgey are still around.

At the moment, after a not very restful night and fighting my way found the supermarket I feel too knackered to even work out how to draw the figure for the trial . . .
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Dave

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Re: Fun Science Videos
« Reply #44 on: July 16, 2017, 06:05:52 AM »
Arturo, it is a pity when belief reduces life's opportunities.
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