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Questions related from Nityananda Das
Can I consider vacuum as a space free from em waves or gravity waves ? If not why such a space can't exist ? And what do we mean by electric impedance of vacuum to to 273 Ohm or something like...
06 June 2019 339 4 View
We know the complex plane representation of impedance of L,C,R. If there is a tank circuit, a capacitor in parallel with an L and R and that is connected with an a,c voltage source. Can we...
06 June 2019 1,118 1 View
When we cool down a room keeping the pressure same, the gas equations imply that particle density should increase. Does this happen and if so , does it affect our human system? Thanks in advance...
06 June 2019 7,130 2 View
EM waves are basically vibrating electric and magnetic fields. So it seems that em waves should be deflected by Electric or magnetic fields . But I think it doesn't happen. Please explain the...
05 May 2019 4,634 6 View
In reciprocal lattice sigma (100) is defined as 1/d(100) and sigma ( 200) as 2/d(100). This is fine. But can I write sigma(200) = 2/d(100) = 1/ d(200) ? I think there is no plane as (200) because...
05 May 2019 8,708 3 View
In X-Ray diffraction a maximum occurs where all the scattering centres contribute constuctively . This comes from Laue equations. Still peaks are of different intensities. Can this intensity...
05 May 2019 4,356 21 View
I have the XRD data for pure BCC Iron. Now I want to change the pure iron by adding carbon with different percentage. Now is there any theory of variation of XRD pattern with the variation of...
05 May 2019 5,994 5 View
As an optical grating , if we think a 2D lattice structure, then I thin Bragg's formula can not be used directly. May be I am wrong. I think in this way because in Bragg's formula "d" I'd there...
05 May 2019 9,181 1 View
I am just entering into this subject . I have seen different XRD data without supplying the value of wavelength of X-RAY used . Is it that the value of wavelength is implied? One XRD machine...
05 May 2019 3,405 10 View
Dielectric discharge voltage of air is 3 KV/ mm. So if two conducting plates are kept with a potential differene of 3kV and placed at a distance of one mm then air discharge will happen. If the...
05 May 2019 7,024 2 View
Coating is used for different purposes. When one face of beam splitter is coated with silver . Reflection of light guided by silver coating will face a pi phase differene or not ? Does this depend...
05 May 2019 5,175 6 View
The Cauchy dispersion formula is valid only for visible light . What the general theory which is valid for a broad range of em frequencies ?
05 May 2019 4,651 3 View
In Fraunhoffer diffraction we use optical lens for focussing the diffracted light to meet at different points of maxima or minima. For X-RAY diffraction we don't. ALSO FOR LASER DIFFRACTION WE...
05 May 2019 8,314 6 View
So many books I have gone through and my idea doesn't come to conclusion. It is said the uncertainty comes to do disturbance during measurement. But I feel and believe that even if we don't...
01 January 1970 499 12 View
Respected All We know moment of force is r×F( vector notation can't be written), moment of momentum is r×p. Moment of inertia is mr^2. THEN WHAT IS INERTIA ? I MEAN MOMENT OF WHICH THING IS...
01 January 1970 6,423 3 View
Is it possible to make a 4 Tesla or 5 Tesla magnet at 5 mm air gap. Air cooled. Regards Nityananda Das
01 January 1970 5,783 3 View
Most people say that electro-magnet of strength more than 2 Tesla is not possible without superconductor. Please tell me why ? Regards Nityananda Das
01 January 1970 1,775 2 View
