fair use statement :
DESCRIPTION
FAIR USE STATEMENT : - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/1.jpg)
FAIR USE STATEMENT: Please feel free to edit and use this presentation in your
classroom. Please do not remove the credit line on the title page or republish the file in whole or in part as your own. Please do not distribute the file to individuals or at conferences or workshops. I am more than willing to share the presentation with anyone that contacts me at [email protected]. The images used in the presentation are not original and the presentation is distributed freely but only for classroom instruction.
Rhonda Alexander
![Page 2: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/2.jpg)
ELECTROMAGNETIC RADIATION
gammaX-ray
Ultraviolet visible
infraredmicro
radio
Planck
Einstein
de Brogelie
Curie
Is a type of energy form that Exhibits wavelike behaviorAs it travels through space
![Page 3: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/3.jpg)
Electromagnetic Radiation
![Page 4: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/4.jpg)
![Page 5: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/5.jpg)
Ground State = Lowest energy level
Excited State = High energy level
![Page 6: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/6.jpg)
wave
![Page 7: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/7.jpg)
![Page 8: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/8.jpg)
Characteristics Crest
Trough
![Page 9: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/9.jpg)
Electromagnetic Spectrum - is all the forms of electromagnetic radiation put together.
Slide 17
![Page 10: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/10.jpg)
WavelengthDistance between two peaks or troughslambda
FrequencyNumber of waves per secondnu
Speed of light, c3.0 X 108 m/s
λ
ν
![Page 11: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/11.jpg)
Electromagnetic Calculations
• E=energy (Joules, J)
• c=speed of light 3.0*108m/s
• h=Plank’s Constant 6.626*10-34Js=frequency (1/s or Hertz, Hz)=wavelength (m)
E=h
c=
![Page 12: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/12.jpg)
Speed of light = (Wavelength)(Frequency)The brilliant red colors seen in fireworks are due to the emission of light with wavelength around 650 nm when strontium salts are heated. Calculate the frequency of red light.
1 m= 109 nm or 10-9m = 1nm
=650nm = 650*10-9 mc=3.0*108 m/s
c==c/3.0*108m/s/ 650*10-9 m.62*1014 1/s
![Page 13: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/13.jpg)
Energy is quantized
Energy is gained or lost in whole number ratios
E= h h=6.626 X 10-34 J . s
Calculate the smallest increment of energy than an object can absorb from yellow light whose wavelength is 589 nm.
=589nm = 589*10-9 mc=3.0*108 m/s
c==c/3.0*108 m/s/ 589*10-9 m*1014 1/s
h=6.626*10-34 Js*1014 1/sE=hE=(6.626*10-34 Js)(*1014 1/s)E=3.37*10-19J
![Page 14: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/14.jpg)
Types of Spectra
All the colors of the rainbow
Only certain colors dependson electron motion
![Page 15: FAIR USE STATEMENT :](https://reader030.vdocuments.net/reader030/viewer/2022032607/5681303c550346895d95d57b/html5/thumbnails/15.jpg)