Onsite Version

Teachers' Domain: Infrared Gallery

Teachers' Domain, Infrared Gallery,
 published October 21, 2005,  retrieved on April 2, 2009, http://www.teachersdomain.org/resource/

 

Electromagnetic Radiation - waves of energy generated by the acceleration of charges

 

 

Why can't neutrons make this kind of wave?

 

 

Have no charge

 

- travel at the speed of light in a vacuum

 

 

3 x 108 m/s


 Electromagnetic Wave
Santa Barbara City College

NASA - Electromagnetic Waves

 

 

Charges "shake" off their energy

 

 in waves when they vibrate

 

 

Vibrating Charges &
Electromagnetic Waves
Physics 2000

3d Electromagnetic Wave
 - David M. Harrison

3d Electromagnetic Wave # 2
 - David M. Harrison



 

 

 

 

 

Electromagnetic Radiation

 - Wavelength and Frequency
Spectrum © W. Bauer

 

Conversion of a DICOM-format X-ray from a ten year old male showing polydactyly. This is the patient's left hand, posterior-anterior projection. Identifying tags and such have been stripped. en:User:Drgnu23, subsequently altered by Grendelkhan, Raul654, and Solipsist.

 

 

In the late 40's & early
50's, an x-ray unit was
a common shoe store
sales promotion device.
They were finally
banned in the US in 1970. 

 

Source - Museum of quackery 

Wikipedia 

 

Meet the Pedoscope

 

Source - Museum of Quackery - Bob McCoy

 

Which wave has the
smallest wavelength?

(hint: most penetrating)

 

 

 

 

Gamma Rays,

X-Rays 

 

 

 

 

Which wave has the
smallest frequency?

 

 

 

 

Radio Waves

 

 

 

 

Which Color Has the
Greatest Wavelength?

 

 

 

Red

 

 

 

Smallest Wavelength?

 

 

 

Violet

 

Which color of light has a
frequency of 6.0 x 1014  Hz?

 

Green

 

 

 

What is the frequency

of light whose wavelength

is 6 x 10-7 m?

 

v = fl

 

3x108 m/s = f[6 x 10-7 m]

 

f = 5  x 1014 Hz

What color?

 

Orange

 

 

Lasers, Frequency, &  Wavelength
Physics 2000

Sonar is used to map the oceans

 Charles Sol
Enseignant Université Marne la Vallée

Creative Commons Attribution 3.0 License

 

 

 

 

Try this at home

Seeing invisible waves with your cellphone

 

 

 

 

 

 

 

Enrichment

 


Microwaves, Standing Waves

 

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