Sponsored Links
This presentation is the property of its rightful owner.
1 / 98

ฟิสิกส์อะตอม PowerPoint PPT Presentation


  • 151 Views
  • Uploaded on
  • Presentation posted in: General

ฟิสิกส์อะตอม. Heinrich Geissler. ประดิษฐ์เครื่องสูบสุญญากาศ. มีกระแสไฟฟ้าผ่านหลอดและมีสีเขียวจางๆเกิดขึ้นที่ผนังของหลอด. Sir William Crookes. รังสีแคโทดเดินทางเป็นเส้นตรง. รังสีแคโทดเบนในสนามแม่เหล็ก. สมบัติรังสีแคโทด. วัสดุหลายชนิดที่ใช้ทำแคโทด จะให้รังสีแคโทดที่มีสมบัติอย่างเดียวกัน

Download Presentation

ฟิสิกส์อะตอม

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript



Heinrich Geissler


Sir William Crookes



Joseph John Thomson


Thomson




R



Thomson 1.4 10-3 9.13 1.0 322


  • 1,800 1,800


Robert A. Millikan


  • Millikan 6.4 10 15

    7 1 1.6 10 19


Thomson


Ernest Rutherford

(alpha particle)


Rutherford


Rutherford


Rutherford


Rutherford



Bohr


Bohr

1 (stationary state)

2 Planck 2mvr = n

  • n


mke2r = (mvr)2


=+


E1= - 13.6 eV

n = 1,2,3


  • h

E = Ei Ef = h


  • (ground state)

  • (excited state)En n 2, 3,4.





(Lymann Series) UV

nf = 1 , ni = 2, 3, 4

(Balmer Series)

nf = 2, ni = 3, 4, 5

(Paschen Series)

nf = 3 , ni = 4, 5, 6

(Bracket Series)

nf = 4, ni = 5, 6, 7

(Pfund Series)

nf = 5, ni = 6, 7, 8


n = 3


Bohr

  • (Zeeman effect)


(black body radiation)

(continuous spectrum)



  • (black body)


T

B = AT 4

-


  • (oscillator)


Planck

1 E = nh

E

h Planck ( Plancks constant) 6.625 10-34

n 1,2 ,3 ......

2


(Photoelectric effect)




  • (Photoelectrons)

  • (Stopping potential)


  • Vs


  • 1.

  • 2.


  • 1


  • (Photon) h h

  • hv


  • (Work function)


h = (Ek)max + Wo

(Ek)max

Wo


  • 589.3 0.36


Compton effect


  • .. 2466 (Arthur Holly Compton) (Scattered x-ray)


  • 2


  • ()



  • E = mc2

  • E = h

  • h= mc2

  • c


  • 0.124 1.0 %


(X-rays)

Wilhelm K.Roentgen


(x-ray tube)



  • V eV

bremsstrahlung

min

(continuous X-rays)


hmax = eV


  • ( K) K L M N

(characteristic X-rays)


n = 2

n = 1

n = 3

n = 1


  • 10,000


(x-ray diffraction)

  • .. 2455 10 9 -10 10

  • (NaCl)


(x-ray diffraction)


(x-ray diffraction)


(x-ray diffraction)

  • (Sir William Bragg)

    2d sin = n

    n = 1, 2, 3,.

    n = 1 1

    n = 2 2


  • Werner Heisenberg (1901-1976 )

  • 1932 (uncertainty principle)



2



- x

- k k

-


  • x

  • x


  • k k

    x . k 1


  • x

  • p


  • ((p =0) (x=)

  • (x=0) (p = )


9.1 10 31 2 10 6 v 0.2 10 6 ( 10 % )



1,000 1 0.1 (10% )



  • .. 1925 (Quantum mechanics)


  • (Erwin Schrodinger) (wave packet) (group velocity)






  • Login