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Orinoco -

Are we still on?

Orinoco - - Parent

Yep, looks like it's just you Mike!

Mike Moore - - Parent

David posted in Meta saying he had some trouble too. Maybe it's all fixed now?

Mike Moore - - Parent

Looks fixed now!

The Void - - Parent

If it helps, I'm still on




....the sofa.

The Void -

Silver Ziethen book on ebay.
https://www.ebay.co.uk/itm/163493037373
Reasonable price. In Germany. Not my sale.

Joerg - - Parent

Thanks for the hint. Ordered one on German ebay for 16€ and already received it.

The Void - - Parent

Bargain!

Tontorino -

Hi, im a juggler from croatia. have been juggling for twenty years. Clubs, balls, uni, fire, devil, diablo. I have a short 4 min video which i want to.share on this forum somehow. Here is the link: https://youtu.be/K3Vd_EJSjy8 thanks for watching, Tomislav Kozarcanin

barnesy -

Circus Club Almere

Hi all, Just a quick ad for our new workshop here in Almere in the Netherlands. https://jugglingedge.com/club.php?ClubID=1838

We've got a great space for it. Hoping to get some local interest!

#CircusClubAlmere

Daniel Simu - - Parent

Nice to see there is some juggling going on in this EJcity!

david - - Parent

I think that would be written IJ city in engels :)

Adam Hellman -

Hello,
I am a 15 year old juggler and I really really want to go to the Fort Wayne IJA festival because it is the only festival that is within a 2 hour drive and within my time constraints. But since I am 15 (16 by the time of the festival) My Mom wants as much information as possible and a soon as possible. However I haven't really been able to find much information about it other than the location and date. Am I looking in the wrong spots or im I just to early because I was looking for like a sedule of the performances and competition times. If not out yet When could I expect to see the sedule?
And information about it would be helpfull
Thanks

Maria - - Parent

Hi Adam
I had a quick look at the IJA page and I don't think there is much information there about this year's festival yet. However, if you click the "past festivals" you could find some schedules from previous years, that could give you a rough idea if this is your first festival.

I have only been to the IJA festival once, last year, so I bet there are people here on the Edge who knows more than I do.

DavidCain - - Parent

I'm the festival director and can probably answer any questions. You and your mom are welcome to contact me.
davidcainjuggler@hotmail.com
513-658-1120

David Cain

Phil Blackmore -

#Plymouthjugglingcircusclubdevon


I'm starting a new juggling club in Plymouth, Devon UK in a couple of weeks.
First meeting on 15th January.

Juggling and club passing, unicycling, hula hoops, poi, staff, diabolo, etc etc...

All skill levels welcome. Primarily for adults, (although enthusiastic under 18’s are welcome if accompanied by an adult).

Stoke Damerel Parish Centre
Tuesdays term time 7:30-9:30pm
£5 (£3 unwaged)


Stoke Damerel Parish Centre
behind Stoke Damerel Church
Paradise Road
Stoke Plymouth PL1 5QL

Facebook: https://www.facebook.com/groups/330085940909651/about/

Cheers,
Phil

Little Paul - - Parent

Good luck!

JugglerRick -

#SeattleFest
After several years of searching for a venue to hold their festival the Cascade Jugglers Association has partnered with Seattle's School of Acrobatics and New Circus Arts (SANCA) to present the new Seattle Juggling Festival. Come join your Pacific Northwest juggling and flow arts friends at SANCA for the weekend before Memorial Day for juggling and flow arts fun and workshops.

See https://seattlejugglingfestival.org for deatials

Marvin -

The Green Eggs Report for December 2018 is now available. Last month 20 people made 59 posts containing 25 links. See past reports.

2018 has thankfully ended. In total 120 users wrote 1515 posts containing 398 links in 266 threads.

I hold no hope for the new year.

Cedric Lackpot -

If you like whips and physics as much as I do, this might be the best ten minutes of your day.

Found in this thread at the very lovely /r/shockwaveporn.

https://youtu.be/AnaASTBn_K4

There's a load of the usual like and subscribe bullshit at the end, but the rest is totes ossum. Enjoy.

Mike Moore - - Parent

Always nice when worlds collide!

I was a bit surprised that they'd originally thought that the fastest point was going to be at the end. My guess is that intuitively, they were thinking about acceleration (or jerk) causing the sound, even though theoretically they knew it was all about speed.

Daniel Simu - - Parent

What do you mean? The 'fastest point' does not equal 'the point that creates the sound'.

Mike Moore - - Parent

Doesn't it? Isn't it the point where it breaks the sound barrier?

Daniel Simu - - Parent

If the speed of sound is reached before the end of the strand, wouldn't you imagine the rest of the whip to keep on speeding up afterwards?
I watched back the video, and this idea of mine is can not be seen at all. Maybe the acceleration should take place but it is disturbed by the shock wave, or maybe something else is going on, I don't know much about physics to be honest. They haven't figured what happens to the tip in the last bit either (8:09 in the video)....

Mike Moore - - Parent

No, I wouldn't imagine the whip would maintain the very speed (or accelerate) into the full extension. I the tip hits its max speed after the whip has a toboggan shape and before it gets to a Chinese spoon angle (I see it as hitting its max speed close to, maybe just slightly after, a Nike smoosh).

The whip appeared to only be going over the speed of sound for a very brief period of time. Sure, its max speed and point at which it breaks the speed of sound could be slightly different, but neither appear close to the full extension of the whip.

It's only using the 3D modelling that they couldn't see what was going on at the end of the whip. The (very) high speed camera using the Schlieren method seemed to capture it well.

Mike Moore - - Parent

You got me curious and I looked up the two paper references in the video because I figured they'd have an equation for the speed. Better, they have a nice diagram. Looks like the toboggan angle is actually the winner!
https://imgur.com/a/xsT3Gxd

From the Arizona people: http://www.e-kaczor.net/keiko/whip.pdf

david - - Parent

I don’t know if the authors have or haven’t mentioned this but here is an older link to whip wave modelling
https://www.sciencedirect.com/science/article/pii/S0167278903002215

The Void -

Archive Luke, from Ruali's tapes.
http://juggling.tv/17060

The Void - - Parent

Or even Rauli. :-)

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