An AC-like system to fight climate change?

Wouldn't it be possible to build a huge air-conditionning-like sytem to evacuate calories from the atmosphere to space, and reduce the atmosphere's temperature?

08 September 2019 1,038 2 View

Is current a real electron movement ?

I learned in school that electrical current was caused by electrons movement from one atom to another, and so on. This was almost 40 years ago. Is this still today the official explanation for the...

04 May 2017 9,112 0 View

Is it possible to intercept a time reversal RF communication ?

31 December 2015 6,353 3 View

Does Heisenberg uncertainty principle apply to Higgs boson or should it be adapted?

The Higgs boson seems to be a particule difficult to detect (elusive particle), in this context does the uncertainty principle apply as well as it applies to other less elusive particles? More...

08 September 2014 9,641 8 View

Never ending Big Bang ?

The current theory about Big Bang says that 'normal' matter, as opposed to antimatter, won because something (some say that neutrinos are responsible) happened that broke the balance between...

08 September 2014 8,424 4 View

Any suggestion for a good but easy to understand book about String Theory ?

String Theory seems quite complicated if you don't have enough scientific background in the domain. I tried "Little book of string theory" from Steven S. Gubser, but it lacks some basic...

08 September 2014 5,895 0 View

Can anyone help with Bruggeman mixing model?

I am using mixing models to calculate effective parameters (such as permittivity or permeability) of mixtures, i.e. inclusions with a given volume fraction in a host medium. There are several...

02 March 2014 6,387 11 View

Does a moving magnetic field generate a current?

Supposing a constant or time varying magnetic field H, moving at the constant speed V at a distance d along an electric wire or a pair of parallel electric wires. Does this generate a current in...

01 February 2014 8,777 12 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 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

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View