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  1. Sivasakthi

    Thermal Expansion of aluminium

    Actually what I focussed was in the size variation.Yeah mechanical stresses are needed for fracture. What I wished to point out was the role of defects or dislocations. They act as carriers of heat as well as for the fracture of materials upon the action of mechanical force.
  2. Sivasakthi

    Thermal Expansion of aluminium

    Hi.. What I wish to say is that the temperature that you measure is an average quantity right? It is that due to the self vibrational energies of all the atomic constituents in the material. When you expose it to more heat, it increases their vibrational energies and these vibrations on an...
  3. Sivasakthi

    Choosing appropriate length scale in condensed matter

    Even if we do have a method, how will that allocate all the scales? How can we know about the degree or a range to which a particular scale has importance? I believe there should be some critical length scale for dealing with a situation like this..
  4. Sivasakthi

    Choosing appropriate length scale in condensed matter

    Hi.. I was reading some papers on continuum dynamics and its application to various material dynamics. The determination of macroscopic behavior is being studied , considering phononic interactions. As a material consists of phonons of various wavelengths, it is necessary to account for various...
  5. Sivasakthi

    Why we always say that time is forward?

    So does it mean that everything in this universe is preplanned?How can we think about past and future then?actually i didn't mean to point it as past and future.But to make clear i should do that.Since it is made a point that we always relate the frame with some other frames,how future and past...
  6. Sivasakthi

    If time didn't exist could anything move or even happen?

    What I could understand till now is that whenever we say that we are at a particular place or something is in a particular position, we always relate it with time.Because time itself doesn't have any existence.The space that we live in is not just the space,but it is space-time.So if no...
  7. Sivasakthi

    Why we always say that time is forward?

    I have a doubt.Don't know if there is any significance in asking this.But i would like to know the reason why we always say that time is forward?Does it mean that it is always continuous?Can somebody help me please?
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