From casmotzer at ysu.edu  Tue Jun 14 09:03:58 2016
From: casmotzer at ysu.edu (Cynthia A Smotzer)
Date: Tue, 14 Jun 2016 13:03:58 +0000
Subject: [YAPA] picnic reminder
Message-ID: <BY2PR05MB1863BB63E5267F92FA9E4726B5540@BY2PR05MB1863.namprd05.prod.outlook.com>

Hello! A reminder that the YAPA picnic is being held at the Crescimanno's house (140 Chapel Lane in Canfield) Wed. June 15. Starting around 6 pm. Bring a dish to share! See you there[?]
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ysu.edu/pipermail/yapa/attachments/20160614/c9ccba70/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: OutlookEmoji-?.png
Type: image/png
Size: 3119 bytes
Desc: OutlookEmoji-?.png
URL: <http://lists.ysu.edu/pipermail/yapa/attachments/20160614/c9ccba70/attachment-0001.png>

From Norma.Holowach at neomin.org  Sat Jun 25 13:55:59 2016
From: Norma.Holowach at neomin.org (Norma Holowach)
Date: Sat, 25 Jun 2016 17:55:59 +0000
Subject: [YAPA] black holes
Message-ID: <C31ED1DD7DFE5F48AF886A81CDA4AFE17036BB18@nmn-exmb01.neomin.net>

My son is asking the following questions:


How can anything fall into a black hole, ever?

I ask this question because time dilation at the event horizon is infinite. This means that an object approaching the black hole will need an infinite amount of time to pass the event horizon (time being that of an observer, such as a telescope on Earth, not the proper time of the object falling in).

This then leads to the follow up question: how can black holes form, ever?

If it takes an infinite amount of time to actually get past the event horizon, how does an event horizon ever form in the first place? Take a collapsing star as an example. Wouldn?t the in-falling matter keep slowing down as time dilation increased towards infinity (from an external observer perspective) and never actually reach the density required to form a black hole?

Am I missing something? Please help!

Norma Holowach, M.Ed
National Board Certified Teacher
Science Department Chairperson
Lakeview High School
300 Hillman Drive
Cortland, OH 44410
(330)637-4921
"Connecting with nature is an essential part of being alive."
National Geographic.


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ysu.edu/pipermail/yapa/attachments/20160625/567911f7/attachment.html>

From admiraljedi at rocketmail.com  Sat Jun 25 18:23:17 2016
From: admiraljedi at rocketmail.com (Thomas Drummond)
Date: Sat, 25 Jun 2016 15:23:17 -0700
Subject: [YAPA] black holes
In-Reply-To: <C31ED1DD7DFE5F48AF886A81CDA4AFE17036BB18@nmn-exmb01.neomin.net>
References: <C31ED1DD7DFE5F48AF886A81CDA4AFE17036BB18@nmn-exmb01.neomin.net>
Message-ID: <734929A2-778F-44C1-A2BB-CA755C944E29@rocketmail.com>

 Hi Norma,

That is an excellent question! And I certainly do not know the answer. 

However, there is a wonderful website called 60 symbols hosted by physicists and chemists at The University of Nottingham.  I have emailed them and they were kind enough to get back to me. You might want to post it to them and they might even do a nice video about it :-)

They also have a video series dedicated to chemistry called Periodic Videos and one for mathematics called Numberphile. 

> On Jun 25, 2016, at 10:55, Norma Holowach <Norma.Holowach at neomin.org> wrote:
> 
> My son is asking the following questions: 
> 
> How can anything fall into a black hole, ever? 
> 
> I ask this question because time dilation at the event horizon is infinite. This means that an object approaching the black hole will need an infinite amount of time to pass the event horizon (time being that of an observer, such as a telescope on Earth, not the proper time of the object falling in). 
> 
> This then leads to the follow up question: how can black holes form, ever? 
> 
> If it takes an infinite amount of time to actually get past the event horizon, how does an event horizon ever form in the first place? Take a collapsing star as an example. Wouldn?t the in-falling matter keep slowing down as time dilation increased towards infinity (from an external observer perspective) and never actually reach the density required to form a black hole? 
> 
> Am I missing something? Please help!
> 
> 
> Norma Holowach, M.Ed 
> National Board Certified Teacher 
> Science Department Chairperson 
> Lakeview High School 
> 300 Hillman Drive 
> Cortland, OH 44410 
> (330)637-4921 
> "Connecting with nature is an essential part of being alive." 
> National Geographic. 
> 
> 
> _______________________________________________
> YAPA mailing list
> YAPA at lists.ysu.edu
> http://lists.ysu.edu/mailman/listinfo/yapa
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ysu.edu/pipermail/yapa/attachments/20160625/928a70db/attachment.html>

From me at jenniferchandler.net  Tue Jun 28 21:20:01 2016
From: me at jenniferchandler.net (J. Marshall)
Date: Wed, 29 Jun 2016 04:20:01 +0300
Subject: [YAPA] surprisingly interesting
Message-ID: <0000f9d38826$2143a89e$2b56fdeb$@jenniferchandler.net>

Hello,

Here is an article that I found by chance, but it turned out so interesting that I decided to share it with you, you can find it here <http://traspotapa.montessoriacademyofchicago.biz/aeqbyh>

J. Marshall

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ysu.edu/pipermail/yapa/attachments/20160629/333179f6/attachment.html>

