Is physics lost in mathematics?

One of the challenges of modern physics is the astounding role of mathematics in physics. So that some physicists claim that physics is lost in...

02 March 2019 9,835 54 View

If physicists accept the photons are not massless, what changes in the modern physics?

06 July 2018 8,333 9 View

What is the difference between a photon carrying an electromagnetic force and a photon carrying electromagnetic energy?

05 June 2018 2,870 26 View

What is the speed of gravity?

The speed of gravity is one of the unresolved physics problems. Although for the first time Newton has introduced force into mathematical equations of physics, it was discussed long time ago....

04 May 2018 9,943 0 View

What is the speed of light in a vacuum really? And who measured it?

Galileo was the first scientist who has tried to measure the speed of light but failed. Although the Galileo 's method to determine the speed of light was very primitive, it was precisely a...

03 April 2018 6,251 0 View

Why Is Light Affected By Gravity?

03 April 2018 8,578 0 View

How a light source emits (or absorbs) a photon? Where do photons go in absorption?

In quantum mechanics, "electrons can absorb energy from external sources, such as lasers, arc-discharge lamps, and tungsten-halogen bulbs, and be promoted to higher energy levels. This tutorial...

02 March 2018 6,442 27 View

What are quantum fields made up of really?

There is still no consensus on whether the fields are composed of particles or no. For examples: Art Hobson, There are no particles, there are only fields, American Journal of Physics 81, 211...

01 February 2018 9,576 11 View

Is it possible to conclude from the de Broglie wavelength that all particles even photon have masses?

In 1924 de Broglie assumed that for particles the same relations are valid as for the photon: E=hf and E=pc Where E and p are the energy and momentum of the...

31 December 2017 4,574 36 View

What is the effect of gravity on the light?

A pulse of light carries energy and momentum, and it is deflected by the gravitational field of a massive body. Then, according to Newton's 'actio equals reactio', it is also a source of a...

31 December 2017 9,326 38 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Discrete Phase model (DPM) particle break-up has particle size limits during particle tracking?

Hello, I am currently working on simulating water droplet partciles in a closed room. When I use uniform particles, without "particle break-up", I can carry out the simulation without any problem....

02 March 2021 3,053 2 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

If you haven't computer? how you show the photons to pupils?

Educational Process

01 March 2021 1,827 1 View

What are the most relevant MSc proposal topics for Petroleum Production Engineering at the moment?

I am a Petroleum Production Engg MSc student at Robert Gordon University in Aberdeen and I am in the process of selecting a topic for my MSc Engineering Investigation proposal. I would very much...

01 March 2021 7,396 4 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

Runs of nucleotides in Sanger sequencing?

I performed site directed mutagenesis, transformation, and then I sent out plasmids for Sanger sequencing and found out that there is extension of DNA just before the stop codon. I am not sure...

27 February 2021 547 3 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View