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Bicycle 101The seven steps of the bicycle method
1. Determine the direction you wish to go
2. Determine whether there is a paved surface
3. Point the bicycle in the proper direction
4. Pedal furiously
5. Determine how far you have moved
6. Determine what change in direction is required
7. Call a cab
Easily learned steps of the method
Visualizing Energy
High Energy State
Low Energy State
What are the components?
…for other forms of energy?
Visualizing Chemical EnergyLife: The play of water
Water: The play of oxygen
HH
O
H2O
Eight electrons
Visualizing Chemical EnergyLife: The play of water
Water: The play of oxygen
HH
O
H2O
-++
Low Energy State
Eight electrons
http://www.bsharp.org/physics/swings
Visualizing PhotosynthesisSympathetic vibration - resonance
0 0 0
Visualizing PhotosynthesisSympathetic vibration - resonance
Distance from you
Force on swing
Push at same frequency
Transfer of energy through resonance...if frequencies match
Time
Visualizing PhotosynthesisSympathetic vibration - resonance
Distance from you
Force on swing
Force on swing
Force on swing
Push at same frequency
Push at twice frequency
Push at half frequency
Visualizing PhotosynthesisSympathetic vibration - resonance
Press silentlyBang then let go
Transfer of energy through resonance...if frequencies match
Visualizing PhotosynthesisSympathetic vibration - resonance
Infrared(low frequency,
low energy)
(high frequency,
high energy)
Ultraviolet
Transfer of energy through resonance...if frequencies match
Visualizing PhotosynthesisSympathetic vibration - resonance
Transfer of energy through resonance...if frequencies match
Which color light will be absorbed (put to use)?
Chlorophyll
Visualizing PhotosynthesisSympathetic vibration - resonance
Transfer of energy through resonance...if frequencies match
Which color light will be absorbed (put to use)?
Carotenoids
Visualizing Photosynthesis
High Energy State
Low Energy State Fate of chlorophyll?
HH
O
H2O
-++
Not as Low Energy State
Visualizing Photosynthesis
High Energy State
Low Energy State Fate of chlorophyll?
HH
O
H2O
-++
Not as Low Energy State
O2
Jeff ElhaiCenter for the Study of Biological Complexity
Virginia Commonwealth University
[email protected]://www.people.vcu.edu/~elhaij
804-828-0794