From: Jeff Friedman (jefffr@sbcglobal.net)
Date: Wed May 07 2003 - 17:26:52 PDT
Message-ID: <002201c314f8$86959220$0300a8c0@jefffrie> From: "Jeff Friedman" <jefffr@sbcglobal.net> Subject: basic plastic speaker lab Date: Wed, 7 May 2003 17:26:52 -0700
basic plastic speaker lab write at this web site:
http://cse.ssl.berkeley.edu/lessons/indiv/regan/speakerlab.html
I did the lab today with my students. First, I built a speaker and let a
few students listen. The sound was very soft. So I asked my students
for ideas to make a louder sound. My students suggested the following
ideas:
1. make more coils
2. use stronger permanent magnets
3. turn up the volume
4. replace the bottom of the cup with: rubber (balloon), paper, or plastic
or ??
They tried all these things and more:
- made coil of different size diameters (didn't notice a difference)
- put 2 speakers in series & put a speaker up to each ear
Among other things, they discovered that:
- more magnets can make the sound a lot louder
- plastic didn't work (why??)
- rubber reproduced the sound most accurately (why??)
- Jeff Friedman
----- Original Message -----
From: Pinhole Listserv <pinhole@exploratorium.edu>
To: Pinhole Listserv <pinhole@exploratorium.edu>
Sent: Wednesday, May 07, 2003 12:20 AM
Subject: Pinhole Digest #1208 - 05/07/03
Pinhole Digest #1208 - Wednesday, May 7, 2003
Interactive Physics Party on May 28- You are Invited
by "Art Fortgang" <afortga@yahoo.com>
Transit of mercury
by "Paul Doherty" <pauld@exploratorium.edu>
More info on mercury transit
by "Paul Doherty" <pauld@exploratorium.edu>
Re: pinhole Transit of mercury
by "Marc Crown" <mcrown@gwhs.org>
Re: Geology
by "Paul Doherty" <pauld@exploratorium.edu>
Fw: History and Fate of the Universe chart field-test
by "Paul Doherty" <pauld@exploratorium.edu>
----------------------------------------------------------------------
Subject: Interactive Physics Party on May 28- You are Invited
From: "Art Fortgang" <afortga@yahoo.com>
Date: Tue, 6 May 2003 07:54:52 -0700 (PDT)
I just received this note from Interactive Physics.
If you have any questions contact Nancy or Nan (see
below)
Cheers
Art
Dear SF Bay Area Physics and Physical Science
Educators:
The developers of Interactive Physics will host a
local physics-teacher party and presentation on using
motion simulation in the classroom.
The date is May 28th, from 4:30 to 6:00 pm, at our
technology center here in Redwood City. We hope to
meet our local community of physics and physical
science educators, as well as provide free tools to
help learn the power of teaching with motion
simulation technology, starting as early as the
seventh grade classroom.
One of the original Interactive Physics developers and
Stanford professor, Dr. Paul Mitiguy, has written a
workbook to enable middle-school science, high-school
physics, and physical science teachers to use motion
simulation as a teaching tool for basic, introductory
concepts. We received an overwhelming response at
NSTA and hope to share some of that enthusiasm with
our local educators.
Dr. Mitiguy will present the workbook, as well as how
to build your own physics experiment with Interactive
Physics, both on the Mac and Windows platforms. Other
presentation topics will include:
How motion-simulation enables students to visualize
and interact with basic physics concepts. Interactive
Physics integration with major textbooks like
Conceptual Physics by Hewitt, Physics by Serway &
Faughn, plus additional textbooks by Giancoli,
Beichner, many more.
How to integrate motion simulation into an already
tight teaching schedule. How to post your simulations
on a physics web site, so your students may download
assignments and learn topics missed in class.
Alignment with National and State Content Standards
for Physics and Physical Science
A brief review of some of the exciting research on
Interactive Physics, funded by the National Science
Foundation
Please let me or my colleague, Nan Presley, know if
you are interested, we will send out a formal
invitation. We will also have giveaway's, [My boss
(Paul) has agreed we can provide free product (one
single-use
license and workbook) for each presentation attendee.
That would normally be $294.00.] prizes, refreshments
and delicious catering by a nearby Italian restaurant.
We hope you can join us! -
Nancy
Contacts:
Nancy Fraser: 650-381-3418
nancy.fraser@mscsoftware.com
Nan Presley: 650-381-3413
nancy.presley@mscsoftware.com
Sincerely,
Nancy Fraser
Manager
Motion & Education Channel
MSC.Software
500 Arguello St, Suite 200
Redwood City, CA 94063
Phone: 800.766.6615
Phone: 650.381.3418
Fax: 866.741.0106
http://www.interactivephysics.com
__________________________________
Do you Yahoo!?
The New Yahoo! Search - Faster. Easier. Bingo.
http://search.yahoo.com
----------------------------------------------------------------------
Subject: Transit of mercury
From: "Paul Doherty" <pauld@exploratorium.edu>
Date: Tue, 6 May 2003 11:18:32 -0700
Wednesday May 7 there will be a transit of Mercury across the face of the
sun.
The event will not be visible to observers in the western US, however there
will be a live webcast of the event.
The event happens between 0500 and 1000 Universal Time
which in Pacific Daylight time is between 10 PM Tuesday the 6'th and 3 AM
Wednesday the 7'th.
Watch it live on the web (see below)
see
http://sunearth.gsfc.nasa.gov/eclipse/OH/transit03.html#webcast
additional information is available at
http://sunearth.gsfc.nasa.gov/eclipse/OH/transit03.html
Which includes a movie taken by the SOHO spacecraft of Mercury approaching
the sun.
Next Year on June 8 the Exploratorium will webcast live coverage of the
transit of Venus, a much rarer event.
Enjoy
Paul Doherty
----------------------------------------------------------------------
Subject: More info on mercury transit
From: "Paul Doherty" <pauld@exploratorium.edu>
Date: Tue, 6 May 2003 11:18:54 -0700
>X-Authentication-Warning: spinoza.public.hq.nasa.gov: majordom set sender
>to owner-press-release using -f
>Date: Fri, 2 May 2003 09:20:36 -0400 (EDT)
>From: NASANews@hq.nasa.gov
>Subject: NASA OBSERVATORY TRACKING RARE SOLAR EVENT
>Sender: owner-press-release@spinoza.public.hq.nasa.gov
>To: undisclosed-recipients:;
>
>Nancy Neal
>Headquarters, Washington May 2, 2003
>(Phone: 202/358-2369)
>
>Bill Steigerwald
>Goddard Space Flight Center, Greenbelt, Md.
>(Phone: 301/286-5017)
>
>RELEASE: 03-152
>
>NASA OBSERVATORY TRACKING RARE SOLAR EVENT
>
> The planet Mercury will pass in front of the sun on
>Wednesday, May 7 in an unusual event called a transit.
>NASA's Solar and Heliospheric Observatory (SOHO) spacecraft
>offers excellent, safe views of the rare occurrence to
>anyone with an Internet connection.
>
>"People will see a small, perfectly round, black dot slowly
>moving across the solar disk," said eclipse expert Fred
>Espenak of NASA's Goddard Space Flight Center, Greenbelt,
>Md.
>
>Mercury transits are rare, occurring only approximately a
>dozen times per century. Observers in Asia, Africa and
>Europe will have the best view of this transit, which will
>already be in progress as the sun rises over America
>(approximately 6 a.m. EDT).
>
>The transit can't be seen with the unaided eye, since
>Mercury's apparent size is only about 1/160 of the sun's
>diameter. Direct telescope viewing is not recommended, since
>special precautions must be taken to avoid permanent eye
>damage.
>
>Although the entire transit lasts over five hours, viewers
>in North America will only see the last 20 to 30 minutes of
>it. The event will be finished by the time the sun rises
>west of a line from the Great Lakes to the Carolinas, but
>the complete transit is safely viewable on the SOHO Web site
>at:
>
>http://soho.nascom.nasa.gov/hotshots/2003_05_07/
>
>SOHO orbits a special point in space one million miles
>(about 1.6 million kilometers) from Earth, in line with the
>sun, to make continuous observations of solar activity. One
>of its instruments, the Large Angle and Spectrometric
>Coronagraph, will be able to see Mercury a few days before
>it transits the sun. Other instruments will track Mercury's
>progress across the solar disk during the transit. The
>pictures will be available almost immediately on the SOHO
>Web site. The SOHO mission is a project of international
>cooperation between NASA and the European Space Agency.
>
>The planets Mercury and Venus are the only ones that appear
>to cross the face of the sun, as seen from Earth, since both
>are closer to the sun than Earth. Venus transits are also
>extremely rare, with just one pair eight years apart every
>105 to 121 years.
>
>"The last Venus transit was in 1882, so no one alive has
>seen one," said Espenak. "Happily, there will be a Venus
>transit June 8, 2004, so this year's Mercury transit can be
>taken as an appetizer for the main course."
>
>The transits were important historically. "Venus transits
>were the Apollo project of the 18th and 19th centuries," said
>Espenak. "There were major international efforts, with
>scientific expeditions to remote corners of the world, in
>order to measure the apparent position of Venus on the solar
>disk. Using trigonometry and a careful analysis of
>observations, astronomers could determine the actual
>distances to Venus and the sun. Captain James Cook, the
>legendary British navigator and explorer, recorded the
>transit of Venus from Tahiti in 1769. The observation was a
>major motivation for his expedition to the South Pacific and
>the circumnavigation of the globe," Espenak explained.
>
>For more information about transits of Mercury and Venus,
>including photographs, refer to:
>
>http://sunearth.gsfc.nasa.gov/eclipse/transit/transit.html
>
>For information on the Internet about Captain Cook's
>expedition, visit:
>
>http://www.geocities.com/TheTropics/7557/cook.html
>
>For recommended safe telescope viewing instructions, refer
>to:
>
>http://skyandtelescope.com/observing/objects/planets/article
>_921_1.asp
>
>
>
>-end-
>
> * * *
>
>NASA press releases and other information are available automatically
>by sending an Internet electronic mail message to domo@hq.nasa.gov.
>In the body of the message (not the subject line) users should type
>the words "subscribe press-release" (no quotes). The system will
>reply with a confirmation via E-mail of each subscription. A second
>automatic message will include additional information on the service.
>NASA releases also are available via CompuServe using the command
>GO NASA. To unsubscribe from this mailing list, address an E-mail
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>
----------------------------------------------------------------------
Subject: Re: pinhole Transit of mercury
From: "Marc Crown" <mcrown@gwhs.org>
Date: Tue, 6 May 2003 11:46:52 -0700
Does anyone have a good write up for a basic plastic speaker lab?
----------------------------------------------------------------------
Subject: Re: Geology
From: "Paul Doherty" <pauld@exploratorium.edu>
Date: Tue, 6 May 2003 15:30:31 -0700
Hi Joe
Here is a photo field trip to a anta Cruz Beach
http://es.ucsc.edu/~geoclub/paleosurfpics.html
and another to Big Sur
http://es.ucsc.edu/~geoclub/bigsurpics.html
Paul D
----------------------------------------------------------------------
Subject: Fw: History and Fate of the Universe chart field-test
From: "Paul Doherty" <pauld@exploratorium.edu>
Date: Tue, 6 May 2003 15:41:47 -0700
Hi Pinholers
Neil Fetter brought a new Poster to the TI classrooms on the history of the
Universe, take a look at it when you visit.
and see below.
Paul Doherty
>
>I saw the chart Neil brought and forgot to ask to make the announcement...
>the chart is beta test and needs responses form all possible viewer types.
>See below.
>Thanks if you can spread the news.
>George Fosselius
>
>
>----- Original Message -----
>From: <barnett@thpdg.lbl.gov>
>To: <ed-qnet-y1tchr@fnal.gov>; <ed-qnet-y2tchr@fnal.gov>;
><ed-qnet-teachers@fnal.gov>
>Sent: Thursday, April 17, 2003 5:58 PM
>Subject: History and Fate of the Universe chart field-test
>
>
>> From: Michael Barnett (Lawrence Berkeley National Lab)
>>
>> Dear QuarkNet friends,
>>
>> The Contemporary Physics Education Project (CPEP)
>> recently announced a new chart entitled:
>> The History and Fate of the Universe.
>> The chart was distributed in The Physics Teacher magazine
>> (March 2003 issue). You may see this chart and print it
>> from:
>> http://UniverseAdventure.org/
>>
>> We can also send you a chart if you intend to field-test
>> it in your classroom. Please send email to us at
>> cpepeduc@cpepweb.org .
>>
>> As with previous CPEP charts (seen at http://CPEPweb.org),
>> we are doing an extensive field test to determine how to
>> improve this chart before printing large numbers of
>> charts.
>>
>> The field-test forms are web-forms that can be filled
>> out at:
>> http://UniverseAdventure.org/fieldtest.html
>>
>> CPEP sincerely hopes you will test the chart in your
>> classroom and take a few minutes to report to us on your
>> experience with it. Thank you very much.
>>
>>
>> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>> Michael Barnett
>> Mailstop 50R-6008
>> Lawrence Berkeley National Laboratory
>> 1 Cyclotron Road
>> Berkeley, CA 94720 USA
>> Tel: (510) 486-5650
>> Fax: (510) 486-4799
>> Email: barnett@LBL.gov
>> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>>
>
----------------------------------------------------------------------
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