Recent content by phy-79

I have problems in understanding what RECIPROCAL VECTORS are... I know the formulas regarding it but don't know their geometric meaning is... How do you represent them in a 3D spcace ?

i'm sorry.i was just stupid.(abt the opposite poles repel) yeah now i get it. thanks.

an example for this is seen in cars.When the area under contact is more, in tyres, the milage(kms covered per litre of petrol) of the car reduces as more friction acts on the tyre,thus resulting in the need of more power for attaining a particular speed.

well actually, yes.

levitation of objects by a magnetic field ? how is it done? does this happen when opposite (charged) field come in contact? i'hve not understood it properly so pls xplain.

I may not got the point correct, but all i know about the last shell is that its where electrons are lost and gained depending on the electropositive or electropositive nature of the element. The atomic number of the element can help you identify the number of electrons in the atom. the number...

well, I'm a subject to 100's and 100's of mathematical problems and i used to have tis prob. i got really fed up with this and so consulted my teacher who sed that i needed some motivation and an aim to solve a prob.Intrest also plays an impt role. well, after this i strted to do probs in the...

a colloidal solution or a colloid is transluscent and causes the tyndell effect, an effect seen when light is dispersed through the canopy of a forest. an example for a colloidal sol. is milk.

sry, i meant the about the double refraction in a secondary raibow.And do tell me what the change in angles are.

what really happens in the secondary refraction of light in a rainbow when it occurs ? Do red and violet stil refract at an angle of 42 and 40 ?