ELECTROMAGNETIC WAVEEEEEEE 9999999999999

It's all about the ELECTROMAGNETIC WAVEEEEEEE

2. prayer
We offer you, Oh God
Our studies and prayers
And we beg you to enlighten our minds
And make us ever pleasing to you
Amen

3. Quick Kamustahan:
1 2 3 4 5
6 7 8 9 10

4. ABC in classroom
A-lignthe chair
B-its of pieces of paper
C-heckingof attendance

5. LECTURE # 1
SCIENCE 10 (SECOND QUARTER)
Electromagnetic Wave

6. Learning Competency
➢Compare the relative wavelengths of
different forms of electromagnetic wave

7. Electromagnetic Wave
The EM wave is a combination of
magnetic field and electric field. A
changing magnetic field produces an
Electric field, and changing electric
field produced Magnetic field. Both
electric field and magnetic field
oscillate perpendicular with each
other. They travel in any medium and
even in an empty space vacuum with
a speed of 3.0 x 10 8 m/s The (7)
Electromagnetic waves formed when
moving charged particles transfer
energy through a field.

8. Electric field and the magnetic field oscillate perpendicular to
each other and to the direction of the propagating wave.
Therefore, electromagnetic waves are
transverse waves.

9. TRANSVERSE WAVES
A. Crest -The highest point
B. amplitude - Maximum distance the wave vibrates from its rest position.
C. Trough -The lowest point
D. wavelength- is the distance between one point on a wave and the
nearest point
D

10. The Electromagnetic Wave Theory
James Clerk Maxwell
a Scottish scientist who developed a
scientific theory to explain electromagnetic
waves. He noticed that electrical fields and
magnetic fields can couple together to form
electromagnetic waves. He summarized this
relationship between electricity and
magnetism by developing equations,
"Maxwell's Equations."

11. The Electromagnetic Wave Theory
Heinrich Hertz
a German physicist who showed that Maxwell's
theory of electromagnetism was correct and that
light and heat are electromagnetic radiations. He
applied these theories to the production and
reception of radiowaves. The unit of frequency of a
radio wave -- one cycle per second -- is named the
hertz, in honor of Heinrich Hertz.

12. The Electromagnetic Wave Theory
Michael Faraday
an English scientist, who discovered
electromagnetic induction, has
contributions on electrical engineering
and electrochemistry. He was
responsible for introducing the concept
of field in physics to describe
electromagnetic interaction.

13. The Electromagnetic Wave Theory
HanzChristian Oersted
a Danish physicist and chemist
who discovered that electric
currents create magnetic fields,
which was the first connection
found between electricity and
magnetism.

14. The Electromagnetic Wave Theory
André-Marie Ampère
-a French physicist who founded and
named the science of
electrodynamics, now known as
electromagnetism.
-Demonstrated the magnetic effect
based on the direction of current

15. Electromagneticwavesareknowntopossess
thefollowingproperties:
1. They are produced by accelerated or oscillating
charge.
2. They do not require any material or medium for
propagation.
3. They travel in free space at the speed of 3x10
8
m/s
and denoted as ( c ) the speed of light.

16. Em Waves are arranged based on:
1.Frequency
2. Wavelength
3. Energy (photon)

17. We can calculate the wavelength and frequency of an
electromagnetic wave using the following formula:
c=v
c or v = meter per second or m/s
λ = meters or m
f= Hertz or Hz

18. The different types of electromagnetic waves can also be compared by the
energy carried by the photon. The energy is given by the equation:

23. The different types of electromagnetic waves can also be compared by the
energy carried by the photon. The energy is given by the equation:

25. 1. Calculate the wavelength of a photon that
has a frequency of 2.5 x 10
12
Hz. (5 points)
2. What is the frequency of an
electromagnetic wave having a wavelength
of 300,000 km?
ASSIGNMENT #1: