jeff elhai center for the study of biological complexity virginia commonwealth university...
TRANSCRIPT
Jeff ElhaiCenter for the Study of Biological Complexity
Virginia Commonwealth University
[email protected]://www.people.vcu.edu/~elhaij
804-828-0794
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
Science 101Our role
Science is the belief in the ignorance
of experts.
- Richard Feynman
A process,...not a body
of facts
Science 101Our role
Science is the belief in the ignorance
of experts.
- Richard Feynman
A process,...not a body
of facts
Once you learn it…
it's yours for life
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
Visualizing Photosynthesis
High Energy State
Low Energy State
How to test this?
HH
O
H2O
-++
Not as Low Energy State
O2
Glucose
Jeff ElhaiCenter for the Study of Biological Complexity
Virginia Commonwealth University
[email protected]://www.people.vcu.edu/~elhaij
804-828-0794