# Detectors

Relentlessly Fun, Deceptively Educational: Brown Baggin' It: A Touch-and-Feel Game. Too many worksheets make for one uncooperative boy.

It’s easy to get in a rut. Ask a soon-to-be-first-grader and they’ll tell you: ruts are NOT fun. To mix it up, I put together a guessing game for my son that I discovered in “Rainy Days and Saturdays” by Linda Hetzer. I labeled brown lunch sacks with the numbers one through 10. Then I ran around the house and collected 10 objects (e.g., an apple, crayon, flip-flop sandal, etc.) when my son was out of the house, stuffed one object in each bag, and stapled the top shut. A scotch tape dispenser is the same shape as a snail. He listed the guesses on a page of his spiral notebook. When he finished touching, smashing, and squeezing each bag, he opened them and wrote down each of the objects in the second column next to his guesses.

My son only guessed one object correctly and he was disappointed. I have a feeling we’ll be playing this little game again sometime. How to make an easy cloud chamber- no dry ice! IceCube Neutrino Observatory. Πως φτιαχνω ανιχνευτη. Popcorn Neutrinos. Printable Versions: DOC | PDF (Thanks to Steve Stevenoski and Eric Muhs, United States) Lesson at a glance By measuring popcorn before and after popping, students will investigate the concepts behind beta decay, neutrinos and the South Pole IceCube Project that is searching for neutrino sources in the universe.

Background The first law of thermodynamics, also known as the law of conservation of energy, states that energy can neither be created nor destroyed. In 1931, study of nuclear reactions showed that when a neutron changed into a proton in a process called ‘beta decay’, it released an electron which called a beta particle. This led Wolfgang Pauli, an Austrian theoretical physicist, to propose that another particle was released during beta decay, which carried the missing energy. Time. Πώς Κατασκευάζουμε Έναν Ανιχνευτή Σωματιδίων...Με Απλά Υλικά! Πρόκειται για την κατασκευή ενός θαλάμου νεφών (cloud chamber).Η λειτουργία του βασίζεται στο γεγονός ότι όταν ένα φορτισμένο σωματίδιο (π.χ.σωματίδιο άλφα ή ηλεκτρόνιο) διέρχεται μέσα από αυτόν δημιουργεί ιονισμό των μορίων του νέφους, τα ιόντα δημιουργούν συγκέντρωση σταγονιδίων κατά μήκος της τροχιάς του σωματιδίου, με αποτέλεσμα η τροχιά του να γίνεται ορατή.

Η απότομη ψύξη του θαλάμου διευκολύνει την δημιουργία σταγονιδίων των κορεσμένων ατμών (π.χ. αλκοόλης), τα ίχνη των οποίων μας αποκαλύπτουν την τροχιά του φορτισμένου σωματιδίου.Υπάρχουν πολλές ιστοσελίδες και βίντεο στο YouTube που δίνουν οδηγίες για την κατασκευή ενός τέτοιου ανιχνευτή αλλά όλες απαιτούν κάποιο στοιχείο που είναι δύσκολο να βρεθεί, όπως ξηρός πάγος ή τροφοδοτικό υψηλής τάσης. Ice Drilling. Printable Versions: DOC | PDF Materials Gallon milk jugs Syringes, large and small Spray bottles Pitchers 13 x 9 baking pan Warm water Stop watches Rulers Thermometers Background The IceCube project at the South Pole has transformed a cubic kilometer of ice into the world’s weirdest and largest telescope.

Light sensors in the ice track particles from outer space that pass through the Earth. When this happens, a new particle is produced that gives off a small amount of light that can be see with very sensitive electronic eyes. The IceCube project uses hot water to melt holes in the ice. Cut below handle as shown. Directions: Cut the milk jugs just below the handle as shown. Discussion Did you think it would be easy or hard to drill though ice only using water? Extensions Monitor the temperature of the runoff water exiting the hole and compare to the starting water temperature from the syringe or spray bottle. Notes. Earthquake Detector. LA: Read with sufficient accuracy and fluency to support comprehension.

LA: Read and comprehend informational texts, including history/social studies, science, and technical texts, at the high end of the grade level text complexity band independently and proficiently. LA: Participate in collaborative conversations with diverse partners about grade level topics and texts with peers and adults in small and larger groups. LA: Determine or clarify the meaning of unknown and multiple-meaning words and phrases based on grade level reading and content, choosing flexibly from a range of strategies. LA: Produce clear and coherent writing in which the development and organization are appropriate to task, purpose, and audience. LA: Report on a topic or text, tell a story, or recount an experience with appropriate facts and relevant, descriptive details, speaking clearly at an understandable pace. MATH: Convert like measurement units within a given measurement system. The Fantastic Machine That Found the Higgs Boson - The Atlantic.

Posters για το πείραμα CMS του CERN στα Ελληνικά. Το ενδιαφέρον των Ελληνικών σχολείων αλλά και γενικά του Ελληνικού κοινού για το CERN είναι από τα υψηλότερα ανάμεσα στα κράτη-μέλη του οργανισμού, και γίνεται μια προσπαθειά από αρκετούς συναδέλφους εδώ να μεταφέρουμε όσο καλύτερα μπορούμε τα όσα συμβαίνουν εδώ σε όσους ενδιαφέρονται.

Όχι μόνο μέσω ξεναγήσεων σε όσους έχουν τη δυνατότητα να μας επισκευτούν στο εργαστήριο, αλλά και μέσω ομιλιών στην Ελλάδα, ή δίνοντας ελεύθερα δεδομένα και προγράμματα για την ανάλυσή τους και μέσω εικονικών ξεναγήσεων στα πειράματα. An introduction to the CMS Experiment at CERN.