What is emotion?

I am a physicist, so I don't know anything about emotions. How would you define them? I watched some TED and one guy said that men do not understand the difference between emotions and feelings....

06 July 2018 790 4 View

How to divide something into parts?

This is the basis of the analysis. One cannot say much about the whole. It is a standard operation procedure in the classical physics. L = L_1 + L_2 + L_int.. One uses addition, since the...

02 March 2018 536 1 View

Is physics a divination tool?

Actually is science in general a divination tool? Did physics fail in this endeavor an event is absent from quantum mechanics?

11 December 2017 2,472 1 View

Could someone point me to an attempt to write down the indistinguishability principle in the Lorentz covariant form?

31 December 2015 9,425 31 View

Could anybody suggest a book for a vacation read?

Something easy, mathematical and fascinating? Like swarms or braids or evolution. Or philosofical, or economical. Easy and interesting

06 July 2015 4,027 3 View

A new electron and an old muon?

All electrons are identical. Transposition of two of them multiplies the wave function by -1. All electrons in the Universe contribute equally to my body. That is not a problem. Let a new electron...

02 March 2015 4,636 2 View

Distribution of shortest distances for random points in 3D?

01 January 1970 9,607 9 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

How to determine implicit ontological and epistemological stance?

I am hoping for some guidance and additional reading material that will assist me in determining ontological and epistemological stance when not explicitly detailed within the research. Here is...

26 February 2021 227 5 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View