tag:blogger.com,1999:blog-42373505481245857132024-03-05T17:52:12.123-08:00Professor Iadevaia's Science Video ClipsThis blog will contain short video clips or images of different aspects of nature. There is no rhyme or reason why I post what I do...it is something interesting to me and maybe to you. Enjoy!...........................
(All videos and images are copyright by David G. Iadevaia, Ph.D. Tucson, AZ)Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.comBlogger48125tag:blogger.com,1999:blog-4237350548124585713.post-30678273647712634302013-12-12T13:49:00.000-08:002013-12-12T13:49:37.018-08:00Fireball Over Tucson 10 Dec 2013<iframe width="420" height="315" src="//www.youtube.com/embed/pz_i_YJZGL8" frameborder="0" allowfullscreen></iframe>
Prof. David G. Iadevaia maintains his private observatory near Sabino Canyon. On Tuesday night the AllSky Camera he designed and built recorded the fireball which lit up the partly cloudy sky and produced a sonic boom heard over much of the area. Attached find a short video clip of the event. Prof Iadevaia retired from Pima College this past summer after 30 years of teaching Astronomy and Physics.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-71476269105218097432013-11-17T13:48:00.001-08:002013-11-17T13:48:51.916-08:00Hummingbirds<iframe width="560" height="315" src="//www.youtube.com/embed/_Q4ftNyupXI" frameborder="0" allowfullscreen></iframe>
These tiny little birds invoke thoughts of harmony and cooperation. But
what is nature really like? Here is my observation of their behavior as
they find a source of food.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-91850213390377509062013-11-10T14:05:00.001-08:002013-11-10T14:13:18.108-08:00ANSR77 Mt. Lemmon Ground Station Test 9 Nov 2013<iframe width="560" height="315" src="//www.youtube.com/embed/FUKPx5k3eWQ" frameborder="0" allowfullscreen></iframe>
This is a test of the ground station to track high altitude balloons
from 9000 foot summit of Mt Lemmon in Tucson Arizona. The test was
conducted by Prof. Iadevaia, KF7MZY on 9 Nov 2013 tracking the beacons
on ANSR 77. The cross band repeater was also used. The test was a
success.
Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com1tag:blogger.com,1999:blog-4237350548124585713.post-84151665673468989182012-06-06T15:30:00.001-07:002012-06-06T15:30:41.721-07:00Prof. Iadevaia's Venus Transit 2012<iframe width="425" height="349" src="http://www.youtube.com/embed/j9J8aCg0378" frameborder="0" allowfullscreen></iframe>
In this short video Prof. Iadevaia shows 3 hours of the transit of Venus across the disk of the Sun in 3 minutes. He and Linda hosted a Venus Transit 2012 party. A good time was had by all at this once in a lifetime special event. Onward to 2117!Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com1tag:blogger.com,1999:blog-4237350548124585713.post-43548456360699277882012-05-28T10:52:00.000-07:002012-05-28T10:52:42.667-07:00Prof. Iadevaia's Fun Flight<iframe width="425" height="349" src="http://www.youtube.com/embed/yc8zcfvo6Xo" frameborder="0" allowfullscreen></iframe>
Sometimes even a professor has to have some fun! Here is a short video from around the 'hood. Toward the rising Sun is Sabino Canyon...to the north are the Santa Catalina
Mountains...to the south, in the distance, is Mount Wrightson and Mount Hopkins, home of the MMT telescope.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-59155060146209541462012-05-22T03:00:00.000-07:002012-05-22T03:00:53.272-07:00Prof. Iadevaia and Annular Eclipse 20 May 2012<iframe width="425" height="349" src="http://www.youtube.com/embed/uVKKognYNKw" frameborder="0" allowfullscreen></iframe>
Prof. Iadevaia and Linda Proctor, take you on expedition to SP Crater near Flagstaff, AZ to view the 20 May 2012 annular solar eclipse. Using various cameras, telescope and appropriate filters they document the eclipse in video as well as still images. SP Crater is a cinder cone volcano about 7 miles in from highway 89. The eclipse was annular for about 2m13s. The approximate GPS coordinates for the observing site was 35.5762N and 111.571W. One experiment was not performed because of high winds. The HD video camera was not flown.It was a successful expedition and Linda, once again was a valuable assistant and photographer.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-14137039883235027412012-04-27T23:30:00.000-07:002012-04-27T23:30:11.722-07:00Prof. Iadevaia Shows a Safe Method to View the Sun with Binoculars<iframe width="425" height="349" src="http://www.youtube.com/embed/4m6tWcu0o7U" frameborder="0" allowfullscreen></iframe>
Prof. Iadevaia shows how to use a pair of binoculars and a tripod to view the Sun. With the upcoming Solar Eclipse and transit of Venus, this method will work very nicely. Never look directly at the Sun with either a telescope or binoculars useless the appropriate filters are used. This method is a projection method and is very safe.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-59303881467217873472012-04-16T18:27:00.000-07:002012-04-16T18:27:04.241-07:00Prof. Iadevaia Explains How a Motor Thrust Rig Works<iframe width="425" height="349" src="http://www.youtube.com/embed/LE25bI10Xqg" frameborder="0" allowfullscreen></iframe><br />
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Prof. Iadevaia demonstrates how the motor thrust rig shown in a <br />
recent episode of Flite Test works. See Measuring Thrust <br />
http://flitetest.com/articles/measuring-thrust/<br />
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There is more than enough info in this clip to build your own Motor<br />
Thrust Rig.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-52191560111003533562012-03-27T16:21:00.000-07:002012-03-27T16:21:17.236-07:00Bixler Post Crash Test Flight<iframe width="425" height="349" src="http://www.youtube.com/embed/7cyZwf7DjRI" frameborder="0" allowfullscreen></iframe><br />
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Prof. Iadevaia rebuilds the Bixler which crashed due to a wing failure. Although another plane is on order it was a good opportunity to take advantage of foam and its repairablity. The crushed nose was heated with a low setting heat gun and twisted back into shape. The crash compressed the nose by about 1/4 inch. The crushed plastic spar was replaced with an aluminum tube of the same length and diameter. This was the second flight but the first to be recorded from the "eyeglass cam". The plane seems to be OK and flys very nicely.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-55402330528634835392012-03-23T14:51:00.000-07:002012-03-23T14:51:52.703-07:00Bixler In Flight Wing Separation<iframe width="425" height="349" src="http://www.youtube.com/embed/31nQOiK6JWg" frameborder="0" allowfullscreen></iframe><br />
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The failure analysis by Prof. Iadevaia on how the wings separated from the fuselage resulting in the crash of Bixler during its 9th flight indicates that the spar did not fail in flight. The embaressing conclusion is that the rubber band that keeps the two wings sections attached was not replaced proir to flight. Here is a good teachable moment in the importance of a pre-flight check list. Watch the thought process that ultimately reveals the cause.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-70077260760253638552012-03-21T19:01:00.000-07:002012-03-21T19:01:48.294-07:00First Video Test of Mini DVR from Bixler<iframe width="425" height="349" src="http://www.youtube.com/embed/KyAMPmz6zQk" frameborder="0" allowfullscreen></iframe><br />
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This is Prof. Iadevaia's first video from the Mini DVR Camera mounted on the Bixler. The mounting was also tested during this flight. This is the first stage of testing for the FPV system.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-58235823208877684002012-03-14T14:25:00.001-07:002012-03-14T14:27:28.502-07:00Prof. Iadevaia's Bixler Maiden Flight Post Kit Build<iframe width="425" height="349" src="http://www.youtube.com/embed/y8MRcOzbFSE" frameborder="0" allowfullscreen></iframe><br />
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This is the maiden flight, post kit build of the Bixler by Prof. Iadevaia. Three flights were made and three successful landings on field occurred. In the post flight review the integrity of the construction is checked. Although a bit pitchy, the Bixler flys very nicely and experience by the pilot with the plane should correct that. The kit build was a success!Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-20983446459591983902012-03-12T22:18:00.001-07:002012-03-12T22:21:13.844-07:00Prof. Iadevaia's Bixler Kit Build<iframe width="425" height="349" src="http://www.youtube.com/embed/F-zNnihuczI?rel=0" frameborder="0" allowfullscreen></iframe><br />
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Prof. Iadevaia selects a trainer RC plane in a kit form. The Bixler is a stable plane ideal for learning to fly RC planes. Using the construction as a lab portion of a college level Intro to Engineering course or as a project in a S.T.E.M. related science course, Prof. Iadevaia shows in depth step by step construction technique. For those new to RC flying and interested in building a kit, this video might convince you to select an RTF (ready to fly) version!<br />
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What you need to complete this project:<br />
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1 - motor BL-2216/6 2200KV<br />
4 - 9g servos HK HTX-900<br />
1 - 30 amp ESC BL-30A<br />
1 - motor mount if you choose not to use the supplied one use Small Parts <br />
CNC Easy Star motor mount<br />
1 - 2.4 GHz 6 channel transmitter and receiver such as the Model FS-CT6B<br />
1- servo Y cable<br />
1- servo 6 inch extension<br />
1 - 3S 2200mAh Lipo Battery<br />
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Also:<br />
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Solder, shrink tube, soldering iron, hand tools, servo tester, volt meter, extreme packing tape etc.<br />
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This is one example of how to assemble this kit. Use this method at your own peril. I will not be responsible for any problems you might have as a result of using this video guide,Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-75687062765913689362012-03-06T17:35:00.001-08:002012-03-06T18:51:23.656-08:00Prof. Iadevaia's Poorman's Wind Tunnel<iframe width="425" height="349"
src="http://www.youtube.com/embed/noYPzWjY-hw?rel=0"
frameborder="0"
allowfullscreen></iframe><br />
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Using an ordinary house fan, Prof. Iadevaia shows how to use it as a poor man's windtunnel. YellowBird is suspended from the ceiling and its wings are in a sling over the plane's center of gravity. As the control surfaces are moved the plane responds.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-22066830963236721862012-02-11T16:52:00.001-08:002012-03-06T18:52:59.261-08:00Sonoran Desert Flyers<iframe width="425" height="349" src="http://www.youtube.com/embed/eYcFdg58h8c?rel=0" frameborder="0" allowfullscreen></iframe><br />
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A typical Saturday morning at the Sonoran Desert Flyers' field at Naranja Park in Oro Valley, AZ. Video by Prof. David Iadevaia who is a member of the Sonoran Desert Flyers and the Academy of Model Aeronautics. Lots of physics and technology going on here! Check us out at www.sonorandesertflyers.usProfessor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-37094857831111280442012-02-08T05:13:00.001-08:002012-03-06T18:54:43.018-08:00What Was the Miracle of the Sun: An Astronomer's View<iframe width="425" height="349"
src="http://www.youtube.com/embed/vY
HvSQC8jZ0?rel=0"
frameborder="0"
allowfullscreen></iframe><br />
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Professor Iadevaia gave the first lecture of the Pima College 2012 Distinguished Faculty Speakers' Series on 7 February 2012. The lecture was given to an anticipated audience of 40-60 people. The actual number of participates was 221. This is the raw video from the lecture and is about 50 minutes long. The lecture was about the unusual behavior of the Sun witnessed by over 30,000 people on 13 October 1917 at Fatima.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-80210241549628108712012-01-28T11:50:00.000-08:002012-01-28T11:50:42.991-08:00Yellow Bird Test Three<iframe width="425" height="349" src="http://www.youtube.com/embed/wxkhfvQZZdk?hl=en&fs=1" frameborder="0" allowfullscreen></iframe><br />
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The importance of the CG (center of gravity) , the stiffness and alignment of the flight surfaces results in a properly flying plane. In this video clip Prof. Iadevaia shows the results of YellowBird's successful taxi, take-off, flight and landing after the repairs and modifications made from data acquired during the two previous tests. Of course, time spent on the flight simulator program didn't hurt!<br />
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The video camera performed just fine. The camera's pointing is a slight issue but can be corrected by tightening a small bolt. In conclusion YellowBird is a suitable platform for aerial video. It is stable.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-52336549249288351532012-01-22T21:29:00.000-08:002012-01-22T21:29:32.377-08:00Yellow Bird Test TwoThis is a continuation of Prof. Iadevaia's experiments in imaging from altitude. This is the second test of Yellow Bird and the video camera. Abandoning the take off roll, I elected to use the hand launch method with camera mounted. Three successful flights were conducted and on board video was taken. Here are the results. Time to learn to fly a different type aircraft. It may be small but you still need basic stick and rudder skills!<br />
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<iframe width="425" height="349" src="http://www.youtube.com/embed/ShP8jCfJ9cU?hl=en&fs=1" frameborder="0" allowfullscreen></iframe>Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-32725197338467521452012-01-22T21:02:00.000-08:002012-01-22T21:02:10.604-08:00Yellow Bird Test One<iframe width="425" height="349" src="http://www.youtube.com/embed/WMedz0sdJYA?hl=en&fs=1" frameborder="0" allowfullscreen></iframe><br />
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This is a continuation of Prof. Iadevaia's experiments in imaging from altitude. This is the first test of Yellow Bird and the video camera. The plane would not take off due to the inability to run straight during the take off roll. Pilot error, rough surface, small wheels or all of the above? I removed the camera and finally got the plane to take off. After minor repairs and alignment the second test was performed. Flying an RC plane is much different than the real thing...but now, for me, this is the real thing!Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-56718875075584740332012-01-12T06:40:00.000-08:002012-01-12T06:40:31.438-08:00An interesting observation<iframe width="425" height="349" src="http://www.youtube.com/embed/1kjtqflU-Gw?hl=en&fs=1" frameborder="0" allowfullscreen></iframe><br />
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An interesting observation made by Prof. Iadevaia on 7 Jan 2012 suggests that a disturbance in a moving medium does not result in a change of wavelength as a result of the moving medium but a distortion of the disturbance. The stream used for the experiment is found just above the Sabino Canyon Dam. It is wide and shallow with a constant velocity. The flow is laminar. Anyone have any ideas? Maybe a more controlled experiment would reveal what is happening. A curious result non the less.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-81031507738965284242011-11-06T11:56:00.000-08:002011-11-06T11:56:22.988-08:00Demonstration of An Equatorial Sundial<iframe width="425" height="349" src="http://www.youtube.com/embed/3t-_tm_zIfE?hl=en&fs=1" frameborder="0" allowfullscreen></iframe><br />
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Prof. Iadevaia demonstrates the workings of an equatorial sundial. From August to November the shadow can be seen on the top face then the bottom face. On the day of the equinox no shadow is seen.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-41488279608940448402011-10-09T12:48:00.000-07:002011-10-09T12:48:25.602-07:00Prof. Iadevaia's HABE<iframe width="420" height="315" src="http://www.youtube.com/embed/HOUlvj8Cw0c?rel=0" frameborder="0" allowfullscreen></iframe><br />
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The culmination of a project that included almost one year of design, planning and building occurred on 8 Oct 2011 when Prof. Iadevaia's High Altitude Balloon Experiment was launched. The Professional Development program at Pima College East Campus supported, in part, this experiment.The HABE payload was part of ANSR Flight 64, a flight to test equipment and techniques used with the various student and teacher NASA sponsored AZ Space Grant launches during the year. All equipment on the HABE payload worked flawlessly and the images and video taken were fantastic.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-74240162306261649862011-10-07T13:19:00.000-07:002011-10-07T13:19:15.450-07:00HABE Pre-flight<iframe width="480" height="315" src="http://www.youtube.com/embed/2N87fAU5bac?rel=0" frameborder="0" allowfullscreen></iframe><br />
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Professor Iadevaia explains the pre-flight payload components for his High Altitude Balloon Experiment (HABE) that will be launched as part of the ANSR Flight 64. Included in the payload will be 2 HD cameras, one recording HD video the othe HD still images taken at 5 second intervals. There is also a 3 axis accelerometer and temperature, humidity and pressure data logger. Flight is scheduled for Saturday, 8 Oct 2011.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-71912935778491430292011-09-23T09:13:00.000-07:002011-09-23T09:13:30.849-07:00Equinox Wall<iframe width="425" height="349" src="http://www.youtube.com/embed/M0ie347HW4s?hl=en&fs=1" frameborder="0" allowfullscreen></iframe><br />
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Prof. Iadevaia shows the sunrise at the Equinox Wall at the Pima College Observatory on 23 Sept 2011...the day of the Fall Equinox.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0tag:blogger.com,1999:blog-4237350548124585713.post-61942767438979514672011-07-21T11:53:00.000-07:002011-07-21T11:56:03.654-07:00Tucson Monsoon Storm<iframe width="425" height="349" src="http://www.youtube.com/embed/vHd69AEGqBs?rel=0" frameborder="0" allowfullscreen></iframe><br />
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The following video clip by Prof. Iadevaia is of a classic monsoon storm. The increase of the rain intensity and decrease of the visibility is apparent as the background mountains become harder to see. The wind and rain becomes stronger as the storm passes.Professor Iadevaiahttp://www.blogger.com/profile/10875818621343426676noreply@blogger.com0