IoT and Physics - from a simple pendulum to cosmic rays
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Transcript of IoT and Physics - from a simple pendulum to cosmic rays
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IoT and Physicsfrom a simple pendulum to cosmic rays
MILAN MILOŠEVIĆ
D E PA R TMENT OF P HYSI C SFAC U LTY OF SC I E N C E A N D MATHE MATI C SU N I V ER SITY OF N I Š, SE R B I A
Workshop on Open Source Solutions for the Internet of Things (smr 3128)ICTP, Trieste, Italy, July 7th, april 2017
fizika.pmf.ni.ac.rs svetnauke.org
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Inflationary Cosmological Models With Tachyon And Radion Fields
Inflation(the GOOD one, in Cosmology)
Abstract: A popular class of the inflationary cosmological models is based on an introduction of a scalar field with non-standard tachyonic Lagrangian of the Dirac-Born-Infeld (DBI) type. A potentially fundamental role of the tachyon fields in the braneworld cosmology was proposed by A. Sen. Research in this PhD thesis is motivated by Randall-Sundrum (RSII) cosmological model. The main objective of the research is to formulate and solve a numerical inflationary model with DBI-tachyon field and RSII model with an additional radionfield, as well as to compute observational parameters. Obtained results are in a good agreement with the real astrophysical data and provide a better understanding of the role of strings and branes in modern cosmology. The results indicated that role of radion in an initial RSII setup is less important than expected.
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It all started with a BIG BANG ☺
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Big Bang... the real on
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Science, Education andScience Communication
World of Science (svetnauke.org)
Southeastern European Network inMathematical and Theoretical Physicswww.seenet-mtp.info
System administrator
Owner, Editor-in-chief
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Science communication
Science fair (2017)Gymnasium Svetozar Marković, Niš
Students of the “High school class for studentswith special abilities in physics”
Department of Physics, Nis
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Education
Students of the “High school class for students with special abilities in physics”Gymnasium Svetozar Marković, Niš
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IoT in Education?
• Subject: Modeling in physics• Mostly theoretical
• Numerical models, simulations
• Programming (in Pascal/Lazarus)
• Now• A little bit of IoT in Electronics
• Future• IoT in Physics?!?!
Damjan CupicSupervisor: Prof. Dr. Dejan Aleksic
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Simple Pendulum
• Lagrangian function:
• Euler–Lagrange equation
• Pendulum
• Equation of motion
T V
0i i
d
dt q q
221 1
2 2
1 cos
T mv m l
U mgy mgl
sin 0g
l
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Standard Model Lagrangian
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Simple pendulum and IoT
• Make a pendulum with a sensor (or a smart phone)
Lot of references:
• P. Vogt, J. Kuhn, The Physics Teacher 50, 439 (2012)
• R. Peters, S. Lee, arXiv:0904.3070 [physics.gen-ph]
• etc
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Double Pendulum (chaos)
2 2 2 22 21 1 1 2 2 21 1 2 2
1 1 2 2, .2 2 2 2
m x y m x ym v m vT V m gy m gy
2
1 2 1 1 2 2 2 1 2 2 2 2 1 2 1 2 1
2
2 2 1 1 1 2 1 1 1 2 2
cos sin sin 0
cos sin sin 0.
m m l m l m l m m g
l l l g
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Foucault pendulum
• Simple device conceived as an experiment to demonstrate the rotation of the Earth (1851 - the first simple proof of the rotation)
• Coriolis force (an inertial force, acts on objects that are in motion relative to a rotating reference frame, pseudoforce)
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Science Communication
• Astronomy ☺
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Future…
• IoT in (real) physics
• Measure UV radiation
• Measure radioactivity
UVB and UVAhttps://learn.sparkfun.com/tutorials/ml8511-uv-sensor-hookup-guide
Radiation Sensor Boardwith J305β Geiger Tubhttps://www.cooking-hacks.com/documentation/tutorials/geiger-counter-radiation-sensor-board-arduino-raspberry-pi-tutorial/
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Project DECO
• https://wipac.wisc.edu/deco/
• Citizen science project that enables users around the world to detect cosmic rays and other energetic particles with their cell phones and tablets.
• Digital camera sensors detect muons in much the same way that they detect photons when we take a picture of friends or a landscape.
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Project DECO - events
• A straight "track" shape indicates a muon produced by a cosmic ray
• A "worm" shape indicates an electron produced by a radioactive decay that either produced an electron directly or produced a gamma ray that then knocked loose an electon
• A "spot" shape indicates an electron or gamma ray
https://wipac.wisc.edu/deco/
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Cosmic Pi
• http://cosmicpi.org/
• A group of people from CERN is using their spare time to build Cosmic Pi, a cosmic ray detector based on a Raspberry Pi.
• Prototype http://www.ohwr.org/projects/cosmic-pi
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A dream…
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Thank you / Hvala / Хвала ☺
Serbianlatin / cyrillic
Milan Milošević
Department of PhysicsFaculty of Science and MathematicsUniversity of Niš, Serbia
www.svetnauke.orgfacebook.com/mmilanlinkedin.com/in/mmilann/
www.seenet-mtp.info