Birth & Death of Stars at Northwestern - Part 3/4

[@sourindey8290]

when you were rotating the sound producing object it remained at a fixed distance from you , so how did you felt the change in pitch?

[@lecturesbywalterlewin.they9259]

reflection from the walls

[@kalyanbratapal1113]

when a neutron star converts into black hole by absorption of mass from nearby objects does the entropy of this system increase or decrease? Does the entropy of this universe increase or decrease. Please reply.

[@lecturesbywalterlewin.they9259]

with any gravitational implosion entropy increases - use google

[@vatsalpanchal1234]

Marvellous lecture sir

[@lecturesbywalterlewin.they9259]

:)

[@harrybruijs2614]

De supernova van 1006 is wel beschreven in Europa, dus er kan volgens mij geen reden zijn waarom die van 1054 niet werd vermeld. De moslims in Spanje waren toch zeer bekwame astrologen en hebben dus het er ook niet over gehad. Vreemd

[@shreyashmeshram5351]

can we say that a point is a vector.......I mean will you please comment on a fight between point Vs vector

[@lecturesbywalterlewin.they9259]

tis is a quora question - sorry

[@shreyashmeshram5351]

ok ...so can you plz tell me that weather can we consider a point as a vector.....if so magnitude will be 0 but what about its direction