What is the force at a spinning object, classically, relativistic and quantum mechanically?

Magus found a force on a spinning particle. It is a lift force that acts along a direction perpendicular to the particle linear velocity and its rotational velocity. Does it have a quantum...

31 December 2018 7,094 3 View

Can we model a metal by a black-body at thermal Fermi temperature?

A black-body absorbs and re-emit radiations at all wavelengths. The intensity due to a black-body is due to Boltzmann-Stefan law. Metals are modeled by a system of free electrons. The uppermost...

03 April 2018 5,296 0 View

Does light have mass inside a stationary and accelerating conductor?

Light is known to be massless in vacuum. However, when it enters a conductor, does it still have zero mass? In a transparent medium, the speed of light is less that c, which would imply that light...

31 December 2017 5,333 17 View

Is there any relation between the de Broglie wavelength and the acceleration of the particle?

According to classical electrodynamics theory, an accelerating charged particle emits an electromagnetic radiation. Unruh on the other hand found that an accelerating observer (charge) will find...

10 November 2017 2,633 8 View

Are the electric and magnetic fields of a freely moving charge always perpendicular to each other and to the particle velocity?

In electromagnetism, a free moving particle charged particle has its electric and magnetic fields perpendicular to each other, and to the particle velocity. Is this true even if the photon is...

06 July 2017 3,088 5 View

Ho one relate a force to a curl of a vector?

A conservative force is define as a negative of a gradient of a scalar. Is it possible to define a force as a curl of a vector? If so, what does that force mean? I found a relation connecting the...

05 June 2017 7,465 0 View

Can we include Hall effect in Maxwell Equations?

05 June 2017 3,261 5 View

If heat is a sort of energy, then how is it connected to electricity?

04 May 2017 9,677 13 View

Does the electromagnetic properties of the topological insulator need new Maxwell equations?

04 May 2017 2,500 5 View

Does an electric field applied on a moving electron create a torque?

A moving electron has both electric and magnetic fields that are perpendicular to its velocity direction. Does the electric field create a torque on the electron? If so what is that torque? Does...

03 April 2017 4,596 8 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 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

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 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

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View