Aaron- I have the same difficulties. For #2 I compare the 4000 or so miles difference to the 93,000,000. 1/25000 Showing the effect of light over a small vs...
Dennis Erickson
derickson@...
Oct 2, 2004 5:56 pm
920
Also--make a scale model of that 1/2500 out on the football field. And compare the 3,000,000 mile difference still giving us winter in the N--- even though...
Dennis Erickson
derickson@...
Oct 2, 2004 5:56 pm
921
... Email Rebecca at SIUE. ... Stand fairly close (~ 1 m or so) to an unfrosted 200W light bulb with your palm facing the bulb. Rotate your palm so that it...
... I dunno about the pretest, but for the seasons I keep a 16mm movie projector in my classroom. I don't use it for movies, but just to project a rectangle of...
Storrs, Alex
astorrs@...
Oct 2, 2004 5:56 pm
923
... I use a Radio Shack Solar cell and measure the current from the cell. I have it mounted on a simple board that I can rotate +/- 23 degrees (or more) -- a...
Dave Bruning
david.bruning@...
Oct 2, 2004 5:56 pm
924
On the subject of test retakes: I've tried at least two things over the years that some readers might find worth trying. 1. The first method I tried allowed...
I am asking your assistance related to a 1-year lecturer position at the University of Nebraska that I have just received permission to offer. This will be a...
Hi Tina, now a lowly graduate TA, opened her big mouth up about the inverse square law of light and using a slide projector to demonstrate it. The professor...
You could try the lab on inverse square law of light on NASA's Structure and Evolution of the Universe web page ... law of light activity -Lindsay ... -- ...
Lindsay M. Clark
clark@...
Oct 27, 2004 6:41 pm
928
You could try using different watt lightbulbs for brightness comparison. They'd have to be at the same distance as the observer, though, otherwise the students...
Lauren V. Jones
jonesl@...
Oct 27, 2004 6:59 pm
929
Radio shack has a simple solar cell (not a phototransistor) -- the cost is probably under $5 still (mine is 10 years old). It puts out a current that is...
Dave Bruning
david.bruning@...
Oct 27, 2004 8:35 pm
930
Hi Tina I use an overhead with a transparency of a sheet of graph paper to do the lab. The number of "squares" of light that strike a surface is a measure of...
Message: 1 Date: Wed, 27 Oct 2004 13:55:23 -0400 From: snupnhomer@... Subject: inverse square law of light and slide projector Hi Tina, now a lowly...
Storrs, Alex
astorrs@...
Oct 28, 2004 8:40 pm
932
Tina- We use the Vernier light probes hooked up to a computer. ( A solar cell an a meter may work) The projector may not give the nice 1/r2 curve, since it is...
Dennis Erickson
derickson@...
Nov 14, 2004 3:34 pm
933
The January 2005 meeting of the American Astronomical Society (AAS) in San Diego will feature several sessions that grew out of the Cosmos meeting. (This...
Hi All, I'm trying to figure out how to take a high school student to the AAS meeting in January. I contacted AAS and they do not have scholarships to take...
**attached is an advertisement for a faculty position at the Univ of Arizona focusing on elementary/middle/infomal education -- there is already a strong ...
Hi A while ago, some one gave me the name of a company that matches those interested in teaching at private schools with private schools. Does anyone know...
Hello, i figured some of you might be intrested in my "venus simulator". it actually is a baloon inside a bottle with a bycicle ventil tire glued to it's cork....
Is anyone working on a version of the ADT for a two semester intro course? I teach a one semester course and a two semester course. In the latter, we don't...
Postdoctoral Position in Science Education, Georgia State University We are looking for someone to conduct rigorous analysis of a program evaluation data set...
Just wanted to share that we now have our observatory up and almost going. We received a grant for $150,000 and got a 20" RC scope mounted on a Paramount,...
Greetings Fellow AstroLrner Members After several discussions at the AAS San Diego meeting and a final public push from Rob Knop (Vanderbuilt), it occurs to me...
Hey Does anyone know off hand of any papers that look into the need or benefits of having introductory labs? I'm just curious as to see if introductory labs...
The National Research Council has released an extensive report on principles of learning in the areas of mathematics, science and history. Based on an analysis...
What a great question. I have been curious about this very issue. It comes up in our faculty workshops often enough that a research article on the effect of...
Ed Prather
eprather@...
Jan 19, 2005 4:35 pm
946
Just a follow-up to this idea on labs. I wonder how many people (or what % of labs taught nationally) are: daytime vs nighttime, desktop experiments (like in...
Ed Prather
eprather@...
Jan 19, 2005 5:00 pm
947
I teach an astronomy sequence for general education credit that has attached labs. Our idea is that whatever unknown value labs might have for comprehension,...
Thanks George. You sentiments about the central focus of labs is shared by the overwhelming majority of instructors I have worked with. Ed ... Dr. Edward E....
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