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Two girls watching a man with a metal detector search for underwater bounty in the Mississippi River at Pettibone Beach in La Crosse, Wisconsin.
The Sudbury Neutrino Observatory. (Courtesy of Lawrence Berkeley National Laboratory)
original source: www.interactions.org/cms/?pid=2100&image_no=LB0034
Science Bowl teams that did not move on to the competitions’ final double elimination rounds had the chance to get an up-close look at the STAR detector at the Relativistic Heavy Ion Collider (RHIC), a DOE Office of Science User Facility for nuclear physics research. STAR, which weighs 1,200 tons and is as large as a house, tracks thousands of particles produced by ion collisions at RHIC to uncover clues about the universe in the moments after the Big Bang.
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Detector contaminated after only 7 months. Major cause identified as
missing filter in the air-conditioning system. The detector was also
less than 100mm from the supply air register.
Anti Icky Poo removes odors created from Dog urine, Puppy urine, Cat urine, Kitten urine, Horse urine, Human urine, Feces, Vomit, Rodent droppings, Bird droppings, Hamster droppings, Turtle waste, Fish decay, Skunk spray to Diaper pails, Trash cans, Rotten vegetables, Smoke and many other Decaying Matters all created from Waste. Anti Icky Poo works on carpet, upholstery, fabric, wood floors, tile, ceramics and even concrete.
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I was about to take a picture of Lucy when something outside distracted her and of course she had to go investigate.
The Bearded Collie (sometimes called the Highland Collie or the Mountain Collie) is one of Britain's oldest breeds. Originating in Scotland, it is believed that it was developed from the breeding of the Polish Lowland Sheepdog (Polski Owczarek Nizinny) to local herding dogs during the 1500s. A common breed in its native land, the "Beardie" was bred to work long hours and think of itself as a tireless sheep herder and cattle drover. By the 1940s, the breed became familiar to other parts of the world and has since become very popular.
As a herding dog, she may try to take charge from instinct and start herding whatever he considers to be his flock. Energetic and enthusiastic, but not hyper, a Beardie needs regular daily exercise. Above all, the Bearded Collie is a family dog who loves children. She is very intelligent, friendly, exuberant, fun-loving, outgoing, and he gets along well with other dogs and family pets.
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I know everyone has done this before. RFID and arduino that is. But looking at the example code it looks like the antenna is always in receive mode. I am not sure how this affects the life of the chip / reader but I thought of adding a way to detect human presence before activating the receiver.
I found some little IR heat detector (here: www.allelectronics.com/make-a-store/item/IRD-10/INFRARED-... and tossed together some analog read code and viola. Now when the IR detector detects over a certain variable heat temp it activates the RFID reader.
I will post the code and write up on my blog.
These are the Lawrence Berkeley National Laboratory (LBNL) members who helped create the Pixel Detector, which is the inner part of the Inner Detector.
Analog signal measurement of 2 fast consecutive marbles. The pulse duration of a marble is about 17 msec, the minimum distance between 2 marbles is about 47 msec. If the marbles are supplied from the transport chain, the time between 2 consecutive marbles is much longer, around 2 sec. The speed is then determined by the motor and the number of teeth between each magnet holder.
This measurement indicates that you need to be able to process a pulse of at least 15 msec in the TXT-Controller. These signals are measured at the top of the input of the module where the IR detector is located.
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IR sensor voor Fischertechnik kogelbaan. De IR sensor kan werken op 5V en op 9V. Hij is niet gevoeilig voor omgevings licht. Zelfs getest in volle zon blijft hij correct werken. Het stroomverbruik door de IR diode is ongeveer 9mA en de load voor de Phototransistor is 5 mA. Burst van kogels worden mooi verwerkt. Ook getest met de TXT Controller Fischertechnik en 9V voeding.
3D files:
Copyright: Dragon
www.dragonmodelsusa.com/dmlusa/prodlist.asp?tlcode=DRA&am...
Interview and scans from:
This is a simple electric field detector. In the presence of electric fields like those present close to live electric lines the LED turns on.
Read more at www.5volt.eu