imagine a man when it all began gsci 101: chemistry
TRANSCRIPT
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
January 29, 2001
• Waves in Nature• Describing a Wave
• Two Types of Waves• Properties of Waves
– Reflection
– Refraction– Standing Waves– Interference
– Diffraction
• The Electromagnetic Spectrum
GSCI 101: Chemistry, Physics and the Human Experience
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Imagine a man when it all beganThe pilot of "Enola Gay"Flying out of the shockwave on that August dayAll the powers that be, and the course of history,Would be changed for evermore...
Rush-“Manhattan Project”
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Energy Transfer—Two Methods
1. A particle
2. A wave
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Transverse and Longitudinal Waves
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
RefractionWater Waves Light Waves
Glass
Air
Air
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Refraction…A Mechanical Analog
Lawn
Road
Road
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Reflection
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Standing Waves
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
More Standing Waves…The Tacoma Narrows Bridge Disaster
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
+
DestructiveInterference
+
ConstructiveInterference
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Diffraction
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Diffraction…2 Point Sources
JMU Department of ChemistryJMU Department of ChemistryCenter for Materials ScienceCenter for Materials ScienceGSCI 101GSCI 101
Why Does a CD Have Colors?