The Electromagnetic Spectrum - PowerPoint PPT Presentation

Loading...

PPT – The Electromagnetic Spectrum PowerPoint presentation | free to view - id: 7d462b-ZDdiN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

The Electromagnetic Spectrum

Description:

Chapter 4 The Electromagnetic Spectrum Part 1 Demonstration Gas spectral tubes: Neon Argon Visible Light Part of the Electromagnetic Spectrum All types of ... – PowerPoint PPT presentation

Number of Views:36
Avg rating:3.0/5.0
Slides: 38
Provided by: Kent2203
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: The Electromagnetic Spectrum


1
Chapter 4
  • The Electromagnetic Spectrum
  • Part 1

2
Demonstration
  • Gas spectral tubes
  • Neon Argon

3
Visible Light
  • Part of the Electromagnetic Spectrum

4
(No Transcript)
5
All types of electromagnetic energy move in waves.
  • Light and sound move by waves.
  • Light moves at
  • 3 x 108 m/s
  • Sound moves at
  • 340 m/s
  • 1 mile 1609 m

6
All types of electromagnetic energy move in waves.
  • Light moves at
  • 3 x 108 m/s
  • Sound moves at
  • 340 m/s
  • Is sound a form of electromagnetic radiation?

7
Electromagnetic Waves
  • Properties of waves include speed, frequency and
    wavelength
  • All electromagnetic waves including light travel
    at a speed of 3 x 108 m/s.

8
Wavelength (?)
Measured in units of length m, nm, A
º
9
Frequency (?)
Measured in cycles/second hertz (Hz)
10
(No Transcript)
11
Visible Light
12
Electromagnetic Radiation
  • For all waves ? ? c
  • c the speed of light 3.00 x 108 m/s

13
A photon of red light has a wavelength of 665 nm.
What is the frequency of this light?
14
A photon of red light has a wavelength of 665 nm.
What is the frequency of this light?
  • 665 nm 665 x 10-9 m

15
A photon of red light has a wavelength of 665 nm.
What is the frequency of this light?
  • 665 nm 665 x 10-9 m
  • c ? ?

16
A photon of red light has a wavelength of 665 nm.
What is the frequency of this light?
  • 665 nm 665 x 10-9 m
  • c ? ?
  • ? c ? 3.00 x 108 m/s 665 x 10-9 m

17
A photon of red light has a wavelength of 665 nm.
What is the frequency of this light?
  • 665 nm 665 x 10-9 m
  • c ? ?
  • ? c ? 3.00 x 108 m/s 665 x 10-9 m
  • ? 4.511278 x 1014/s or Hz

18
A photon of red light has a wavelength of 665 nm.
What is the frequency of this light?
  • 665 nm 665 x 10-9 m
  • c ? ?
  • ? c ? 3.00 x 108 m/s 665 x 10-9 m
  • ? 4.511278 x 1014/s or Hz
  • ? 4.51 x 1014/s or Hz

19
An x-ray has a frequency of 7.25 x 1020 Hz. What
is the wavelength?
20
An x-ray has a frequency of 7.25 x 1020 Hz. What
is the wavelength?
  • 7.25 x 1020 Hz 7.25 x 1020/s

21
An x-ray has a frequency of 7.25 x 1020 Hz. What
is the wavelength?
  • 7.25 x 1020 Hz 7.25 x 1020/s
  • c ? ?

22
An x-ray has a frequency of 7.25 x 1020 Hz. What
is the wavelength?
  • 7.25 x 1020 Hz 7.25 x 1020/s
  • c ? ?
  • ? c ? 3.00 x 108 m/s 7.25 x 1020/s

23
An x-ray has a frequency of 7.25 x 1020 Hz. What
is the wavelength?
  • 7.25 x 1020 Hz 7.25 x 1020/s
  • c ? ?
  • ? c ? 3.00 x 108 m/s 7.25 x 1020/s
  • ? 4.137931 x 10-13 m

24
An x-ray has a frequency of 7.25 x 1020 Hz. What
is the wavelength?
  • 7.25 x 1020 Hz 7.25 x 1020/s
  • c ? ?
  • ? c ? 3.00 x 108 m/s 7.25 x 1020/s
  • ? 4.137931 x 10-13 m
  • ? 4.14 x 10-13 m

25
Energy of Waves
26
Energy of Electromagnetic Radiation
  • For all waves E h ?
  • h 6.63 x 10-34 J s or J/Hz

27
A photon of red light has a wavelength of 665 nm.
What is the energy of this light?
28
A photon of red light has a wavelength of 665 nm.
What is the energy of this light?
  • 665 nm 665 x 10-9 m
  • c ? ?
  • ? c ? 3.00 x 108 m/s 665 x 10-9 m
  • ? 4.511278 x 1014/s or Hz
  • ? 4.51 x 1014/s or Hz

29
A photon of red light has a wavelength of 665 nm.
What is the energy of this light?
  • 665 nm 665 x 10-9 m
  • c ? ?
  • ? c ? 3.00 x 108 m/s 665 x 10-9 m
  • ? 4.511278 x 1014/s or Hz
  • ? 4.51 x 1014/s or Hz
  • E h ? (6.63 x 10-34 J s)(4.51 x 1014/s)

30
A photon of red light has a wavelength of 665 nm.
What is the energy of this light?
  • 665 nm 665 x 10-9 m
  • c ? ?
  • ? c ? 3.00 x 108 m/s 665 x 10-9 m
  • ? 4.511278 x 1014/s or Hz
  • ? 4.51 x 1014/s or Hz
  • E h ? (6.63 x 10-34 J s)(4.51 x 1014/s)
  • E 2.99013 x 10-19 J

31
A photon of red light has a wavelength of 665 nm.
What is the energy of this light?
  • 665 nm 665 x 10-9 m
  • c ? ?
  • ? c ? 3.00 x 108 m/s 665 x 10-9 m
  • ? 4.511278 x 1014/s or Hz
  • ? 4.51 x 1014/s or Hz
  • E h ? (6.63 x 10-34 J s)(4.51 x 1014/s)
  • E 2.99013 x 10-19 J 2.99 x 10-19 J

32
An x-ray has a frequency of 7.25 x 1020 Hz. What
is its energy?
33
An x-ray has a frequency of 7.25 x 1020 Hz. What
is its energy?
  • E h ? (6.63 x 10-34 J/Hz)(7.25 x 1020Hz)

34
An x-ray has a frequency of 7.25 x 1020 Hz. What
is its energy?
  • E h ? (6.63 x 10-34 J/Hz)(7.25 x 1020Hz)
  • E 4.80675 x 10-13 J

35
An x-ray has a frequency of 7.25 x 1020 Hz. What
is its energy?
  • E h ? (6.63 x 10-34 J/Hz)(7.25 x 1020Hz)
  • E 4.80675 x 10-13 J
  • E 4.81 x 10-13 J

36
wavelength, frequency and energy
Red Light
  • ? 665 x 10-9 m
  • ? 4.51 x 1014 Hz
  • E 2.99 x 10-19 J
  • ? 4.14 x 10-13 m
  • ? 7.25 x 1020 Hz
  • E 4.81 x 10-13 J

X-ray
37
Wavelength, frequency and energy
  • Wavelength and frequency have an indirect
    relationship.
  • Energy and frequency have a direct relationship.
  • Electromagnetic radiation with a shorter
    wavelength will have a higher frequency and
    higher energy.
  • Electromagnetic radiation with a longer
    wavelength will have a lower frequency and lower
    energy.

38
Homework
  • Chapter 4 Worksheet 2 (due in two days)
About PowerShow.com