Suppose-your-weight-is-50kg-and-you-are-taking-rest-what-is-the-de-brogli-wavelength-associated-by-you-Respect-to-the-universal-system-suppose-another-one-who-is-calculating-your-wavelength-is-on

Question Number 99537 by Dwaipayan Shikari last updated on 21/Jun/20

Suppose your weight is 50 kg and you are taking rest .

what is the de - b r o g l i wavelength associated by you .

(Respect to the universal system) [suppose another one who is

calculating your wavelength is on space]

Answered by smridha last updated on 21/Jun/20

m e a n i n g l e s s q u e s t i o n . .

w e i g h t = 50 k g!! {t h a t}^{'} s n o t r i g h t

i t s h o u l d b e m a s s .

d e - b r o g l i e f o r m u l a v a l i d f o r

q u a n t u m w o r l d \dots

a r e y o u q u a n t u m p a r t i c l e ? ?

w a v e l e n g t h i s v e r y n e g l i g i b l e .

a n d a l s o y o u a r e i n r e s t . . s o {i t}^{'} s

m e a n i n g l e s s . . t o u s e d e - b r o g l i e .

Commented by Dwaipayan Shikari last updated on 21/Jun/20

E a r t h i s r o t a t i n g a b o u t h i s a x i s w i t h a s p e e d o f 30 k m / s (a p p r o x)

Commented by Dwaipayan Shikari last updated on 21/Jun/20

S o r r y! I t i s m a s s . I u s e d t h e u s u a l s p e e c h l i k e w e i g h t .

Commented by smridha last updated on 21/Jun/20

e a r t h a l s o m o v e s r o u n d t h e s u n

a t a s p e e d v = \sqrt{g r} . . a n d

w e a l s o {d o n}^{'} t k n o w t h e v e l o c i t y

o f f r a m e w h e r e w e m e a s u r e . .

a n d t h e m o s t i m p o r t a n t t h i n g

c a n w e u s e d e - b r o g l i e f o r m u l a

i n t h a t c a s e . . b e c a u s e w e a r e n o t

q u a n t u m p a r t i c l e \dots

Commented by Dwaipayan Shikari last updated on 21/Jun/20

s u p p o s e t h e f r a m e i s i n e r t i a l

Commented by Dwaipayan Shikari last updated on 21/Jun/20

I a l s o k n o w i t i s a s t u p i d q u e s t i o n . B u t i a m t r y i n g t o v i s u a l i s e t h o s e t h i n g s

Commented by Dwaipayan Shikari last updated on 21/Jun/20

I a m s o r r y a s i a m s p e n d i n g y o u r v a l u a b l e t i m e .

Commented by Dwaipayan Shikari last updated on 21/Jun/20

I a m a s t u d e n t s o i w a n t t o l e a r n m o r e .

Commented by smridha last updated on 22/Jun/20

w e l l I c o n s i d e r i t i s a n o n - R e l a t i v i s t i c

c a s e \dots

t h e n i f t h e f r a m e (l e t s s a y s^{^{'}}) i s i n e r t i a l

t o o u r l a b - f r a m e t h e n t h e o b s e r v e r

w h o w a t c h i n g o v e r y o u f r o m s^{^{'}},

s e e y o u a r e s t a n d i n g s t i l l i n r e s t .

s o r e l a t i v e v e l o c i t y v_{r e l} = 0

s o y o u r d e - b r o g l i e w a v e l e n g t h

i s λ \Rightarrow \infty . I a m n o t s a t i s f i e d w i t h

t h i s a n s \dots a r e y o u ? ? ? {i t}^{'} s f a i l t o

d e s c r i b e t h e p h y s i c a l n a t u r e \dots

b e c a u s e \infty i s j u s t a c o n c e p t i t c a n n o t

b e a n s . . n o o n e c a n k n o w w h a t

i t i s . .

Commented by Dwaipayan Shikari last updated on 22/Jun/20

But respect to the inertial frame I was moving at a speed of 30 km/s. And at an instant of time earth revolving speed may be neglected

Commented by smridha last updated on 22/Jun/20

w h a t i s i n e r t i a l f r a m e o f r e f e r e n c e ? ? ?

(i) a f r a n e w h i c h i s m o v i n g w i t h

u n i f o r m v e l o c i t y

(i i) a f r a m e w h i c h i s s t a n t i n g

a t r e s t a n d a n o t h e r f r a m e i s

m o v i n g w i t h c o n s t a n t s p e e d r e s p e c t

t o t h a t f r a m e . . i n t h a t c a s e 1 s t f r a m e

i s a l s o a i n e r t i a l f r a m e .

I c o n s i d e r a f r a m e w h i c h h a s

u n i f o r m v e l o c i t y a s s a m e a s e a r t h .

r o t a t i o n a l s p e e d a b o u t i t s o w n a x i e s a n d

r e v o l v i g s p e e d a r o u n d t h e s u n b o t h

i n t h i s c a s e a r e s a m e a s e a r t h .

s o f r o m t h i s a s s u m t i o n y o u a l s o

a t r e s t f o r t h e p r i m e o b s e r v e r w h o i s

w a t c h i n g o v e r y o u .

s o v_{r e l} = 0 s o λ \Rightarrow \infty . . w o r t h l e s s!!

f o r s i m p l i f i c a t i o n y o u c a n

c o n s i d e r a f r a m e o f r e f e r e n c e

l i k e a g e o s t a t i o n a r y s a t e l i t e .

Commented by prakash jain last updated on 23/Jun/20

The laws of quantum physics apply

to all objects regardless of mass .

Commented by smridha last updated on 23/Jun/20

b u t {i t}^{'} s n o t l o g i c a l t o u s e

b e c a u s e t h e r e s u l t i s v e r y

n e g l i g i b l e \dots t h e r e f o r e

p h y s i c i s t s s a y c l a s s i c a l m e c h a n i c s

i s t h e a p p r o x i m a t i o n o f q u a n t u m

m e c h a n i c s \dots . i f t h e r e s u l t i s

s a m e t h e n t h e r e i s n o c a u s e t o

d e v o l o p e q u a n t u m m e c h a n i c s . .

y o u s h o u l d a w a r e o f t h a t i n

w h i c h c o n t e x t w h i c h f o r m u l a

d o y o u u s e o r n o t a b l e t o u s e . .

c l a s s i c a l a n d q u a n t u m b o t h

a r e i m p o r t a n t \dots p h y s i c i s t s d o n o t

h a p p y w i t h s o m e m a t h e m a t i c a l

r e s u l t b u t t h e s i g n i f i c a n t

m a t h e m a t i c a l r e s u l t a n d s o

t h e y g i v e s a m e p r i o r i t y t o b o t h

m e c h a n i c s \dots

Commented by prakash jain last updated on 23/Jun/20

100 % agree with you .