This video is from my nephew Alex. At 10, he’ll be starting full time at California State University, L.A. in the fall.
So proud…
Check out all of Alex and Sophie’s videos here and buy their book!
Noema Slur
March 10, 2016
March 9, 2016
Astronomy, Hobby Astronomy, Spectroscope, Spokane Astronomical Society Leave a comment
Other than purely theoretical astronomy, all astronomy depends on some kind of light (electromagnetic wave).
Among ancients the most they could do was determine the position of stars accurately and relate their position to the rotation of the earth.
Today, one of the most valuable instruments for really getting information about the star itself, is the spectroscope.
How broad the spectral lines are, any shift in their position and the patterns of emission and absorption lines all tell us about the star.
To get practical experience in how valuable this is, I had the youth group of the Spokane Astronomical Society build spectroscopes using the Mac and Cheese boxes common in 2002. We also had access to some grating material from my employer at the time. The only other supplies needed were some thick black paper and some black photographer’s tape for the slit and grating ends of the box.
I created a worksheet which used the grating equation to figure out what angle the spectrum would appear at relative to the slit on the other side of the box. To test the results of our computations, we held a red laser (633nm) one mac-&-cheese-box-length away from a white board and marked where the light fell. Then we passed it through the grating onto a white board and marked where that light fell. Then we measured the distance between the two.
The design looked like this:
I created several light sources to see the different spectra possible and provided this chart to classify what gasses were in those sources.
March 7, 2016
Astronomy 10x video, POV Ray Leave a comment
In one presentation I made to the Young Astronomers of the Spokane Astronomical Society, I bought several dozen pair of red/cyan anaglyph glasses for a 3-d presentation.
It starts at a popular park in the Spokane area called the Bowl and Pitcher.
February 14, 2016
Astronomy Gravity Wave, Interferometer, LIGO, Spokane Astronomical Society Leave a comment
I was thrilled to hear the announcement that gravity waves had been detected by scientists at the LIGO telescope in Washington.
When I lived in Spokane, Washington I was active with the Spokane Astronomical Society where I made a number of presentations about several exotic theories.
Among these was the presentation I gave on INTERFEROMETRY which preceded a field trip by members of the youth group I had been tutoring. At the time of our visit in 2003, LIGO was still in its first engineering runs and only had hopes of what was discovered in September 2015.
Among the tools I used to teach the students was a laser interferometer I built using a laser pointer.
May 5, 2014
L&E Robotics Electronics, FIRST Robotics, FIRST Robotics Mentor Leave a comment
February 1, 2014
L&E Robotics Electronics, FIRST Robotics, FIRST Robotics Mentor Leave a comment
Today marked a milestone in our progress: The first motorized movement of our robot chassis. Several of the students got a feel for the controls using two joy-sticks coupled to the laptop that interfaced with the robot.
We finally got our parts kit on Thursday and there has been a great deal of progress since then.
There are still many open design questions regarding autonomous portion of the competition (The robot figuring out what to do on its own) and for the actual mechanism for getting the ball and scoring points.
January 19, 2014
L&E Robotics Electronics, FIRST Robotics, FIRST Robotics Mentor Leave a comment
We still don’t have our KoP so everyone divided up into sub-group (Brian calls them “fire teams”) to further plan and develop the design of the robot.
Brian started us off with a brief video covering the electronics of the robot and then asked the electronics fire team to begin planning the layout of components. The programming group met separately (shown in the foreground of the picture) and quickly built a scale mock-up of the field, a white-box of the robot and included all the physics and controls to move the robot around the field. At the upper right you can see L& E’ s own Ian, Bobby and Ian’s dad working on a team logo. Our team also worked on dismantling last year’s bot so that we could have all the parts available for the electronics team to do the layout.
The KoP should be here early next week and we can begin construction in earnest. Bobby has signed up to be a part of the chassis assembly team so he’ll have a lot to contribute once the parts arrive.
Some of the DigiPen students have created a team blog site similar to this one at https://firstrobotics.digipen.edu/ . You are invited to contribute ideas, observations and thoughts about the project on this site.
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