The "flickering red taillights" is simply an artefact of the video capture and the (common, these days with LED lights) duty-cycle blinking of lights when they are at less than full brightness. Notice that when the lights are coming on full power during braking that also the blinking stops? That is because they are 100% on during that time.
You can see the blinking with your naked eye at night, when you quickly sweep your eyes past the lights, because every blink will hit your eye at a different spot, so you see a series of individual images of the lights repeated after each other. If the lights are at a longer duty cycle, you will see a stripe-break-stripe-break type of image, but if the lights are only on a short flash, then you will see rather sharp images of the lights repeated across your field of vision. This is the same for LED car lights, digital alarm clocks and a host of other light generating devices that are duty-cycled or controlled using a matrix-scan to reduce the number of control lines. The reason that the video shows them blinking on and off is due to the camera's own scanning speed that takes samples of the light received at slightly different speed than the speed of duty cycle switching of the lights themselves. This is a similar effect as seeing the rims turn slowly backward on a car driving forward at speed. The difference between rim spokes whizzing by and the camera capturing them, each next spoke a small distance further back so it appears as if the subsequent captures are the rims turning slowly backwards. Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.info Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626 Tel: +91 (040)23117400 x203 -----Original Message----- From: EV on behalf of brucedp5 via EV Sent: Fri 7/31/2015 12:50 AM To: [email protected] Subject: [EVDL] EVLN: Tesla-X sighting/spied in Berkeley-CA (v) % 2nd video is amateur-awful but note the flickering rear tail lights % http://motrolix.com/2015/07/two-tesla-model-x-sightings-in-as-many-days-video/ Two Tesla Model X Sightings In As Many Days: Video by Aaron Birch - Jul 24, 2015 [image http://motrolix.com/wp-content/uploads/2015/07/Tesla-Model-X-spied-in-Berkeley.jpg Still frame from YouTube video by: flathillll videos https://www.youtube.com/watch?v=Q6Gn1ykztso Tesla model x count783 Jul 20, 2015 Just saw this this morning looks like someone took it in the dirt https://www.youtube.com/watch?v=K6cUCMeVNbY Tesla Model X Berkeley 21 July 2015 flathillll Jul 21, 2015 shot of front at end of poorly shot video :) ] The Tesla Model X keeps marching right along to its scheduled start date, so far (surprisingly) without any publicly-known setbacks or last-minute delays. As such, prototype sightings of the forthcoming electric SUV are becoming increasingly frequent, and two such videos have surfaced in as many days. (A heartfelt thanks to our friends at Autoblog for sharing these clips.) First, a Tesla Model X prototype was spotted in Chandler, Arizona, as you can see in the video just below. It's being pulled on a flat-bed here, so that we don't actually get to see it driving along on its own steam, but the far bigger story is that the crossover EV is caked in dried mud, suggesting some sort of offroad testing took place just prior to its sighting. Of course, why shouldn't the Tesla Model X be engaging in some assessment of offroad prowess? We know that the pure-electric SUV will have essentially the same all-wheel drive system as on the Tesla Model S "D," standard towing capability, and most intriguing, the independent control of each of the two drive motors could function as a virtual locking central e-differential. The very next day, still another video surfaced, showing the Tesla Model X driving the streets of Berkeley, California. What's most interesting about this sighting is that the utility vehicle prototype is laden with some unidentified external sensors. Chances are, these sensors are simply tied to the Tesla Model X's own implementation of the automaker's "autopilot" semi-autonomous system, but Autoblog astutely points out that Tesla Motors fans have been surprised with unforeseen new features before. As such, we invite your wildest, most inconceivable predictions. [© motrolix.com] ... http://www.greencarreports.com/news/1099325_tesla-model-x-spy-videos-dirt-indicates-off-road-tests-but-what-do-sensors-do Tesla Model X Spy Videos: Dirt Indicates Off-Road Tests, But What Do Sensors Do? By Stephen Edelstein Jul 29, 2015 For EVLN posts use: http://evdl.org/evln/ http://www.irishtimes.com/life-and-style/food-and-drink/win-a-23-000-car-just-by-snapping-a-selfie-with-your-homegrown-veg-1.2293457 #GrowItYourSelfie fundraiser might win a ?23k Renault Fluence EV https://en.wikipedia.org/wiki/Renault_Fluence_Z.E. http://insideevs.com/clippercreek-family-expands-40-amp9-6-kw-ev-charging-station/ $835 ClipperCreek HCS-50 in/outdoor L2 9.6kW/40A EVSE http://patch.com/california/mountainview/mountain-view-approves-new-city-solar-ev-charging-projects? Adding L2 EVSE @Mt.View-CA City Hall & 5 to @CA&Bryant Parking + EVLN: View of Tesla's massive Nevada battery Gigafactory {brucedp.150m.com} -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Tesla-X-sighting-spied-in-Berkeley-CA-v-tp4676990.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
