Recent content by e.chaniotakis

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    I Silly question on the relativity of simultaneity

    Something that I consider very silly, yet I try to solve relates to the relativity of simultaneity. According to SR , two evevnts taking place in different positions along the line of relative motion of two inertial observers are not simultaneous in both frames. Now, I wanted to see how this...
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    Certificate in creating virtual labs?

    Hello, I want to learn how to create virtual labs (html5, java and on) for physics education purposes. I could work on my own, but I am more interested in getting a solid background from experts. Is there any online course in which I could enroll? Thank you
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    How is physics knowledge used in everyday life?

    I am a rather bad case for answering this as my work is mainly focused on designing educational scenarios on STEM and doing teacher training. So I do Physics more or less most of my time :-p To draw the students' attention to Physics I try to find something that intrigues them and then forge...
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    Other PhD advice

    thank you
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    Other PhD advice

    Thank you very much. It seems to be exactly what I am looking for. Do you happen to know if similar opportunities exist in Europe?
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    Other PhD advice

    Hello. I am a Physicist with MSc in Experimental Particle Physics and for the last 3 years I work in the field of Science Education as a teacher trainer, and developer of inquiry based, ICT enhanced educational content in the field of Physics for K12 students in the RnD department of a school in...
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    Sound Loudness vs Pitch Misconception

    Hello everybody. I am involved in a project aiming to address Physics Misconceptions regarding Sound through the creation of virtual musical instruments. One of the major student misconceptions I have found in bibliography is the fact that students perceive sound pitch and loudness as being the...
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    I Is the top quark stable in the absence of the Higgs field?

    This means that in a Higgsless universe you would not have 3 neutrino flavors also?
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    Torque Intuition

    Perhaps there is another way to depict it but you need to know some physics first. Assume that you have a spinning wheel rotating at constant angular velocity (ω). Now, if you start acting on it with a tangential force, then it starts speeding up. Its angular velocity increases with time...
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    On the concept of mass

    The relativistic increase in mass is due to the fact that at high speeds (u->c) the mechanics you use are relativistic. The term invariant mass is the correct one - a question: how would you define mass in a proper textbook format? E.g I would say that mass is the energy of an object observed...
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    High energy neutrino telescopes

    By "do that" you mean increase the effective area in such a way that you could observe astrophysical signals? First things first: When one tries to do neutrino physics without accelerators or reactors, (or geoneutrinos =>just saying for completeness) the possible signals come from the...
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    High energy neutrino telescopes

    Not quite to me, even though we should agree that this is just a matter of terminology. E.g SNO, or Super Kamiokande cannot be referred to as neutrino telescopes since they cannot observe astrophysical sources of neutrinos ( it is just solar neutrinos and atmospherics ). A neutrino telescope...
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    High energy neutrino telescopes

    Hello, I am opening this thread so as to discuss if possible what you believe is the science case of building a neutrino telescope. Being a fanatic in the field , I would like to hear opinions from whoever wants to say about whether it is important to build such a detector and why. Thank you!
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    Threshold, proton-proton-collision

    Sorry, but the Kaon reaction you write doesn't conserve electric charge
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    Is there a limit to how much energy can be stored in a photon?

    About the GZK cutoff, yes it exists (or so we believe) which prohibits us from observing protons more energetic than 6*10^19 eV (taken that the interaction length of the proton in the CMB is lower than the proton source- earth distance). Of course, there might be a way for a (e.g)10^25eV proton...