Jeff Elhai Center for the Study of Biological Complexity Virginia Commonwealth University

1
(No Transcript)
2
Jeff ElhaiCenter for the Study of Biological
ComplexityVirginia Commonwealth
University ElhaiJ_at_VCU.Eduhttp//www.people.vcu.e
du/elhaij 804-828-0794
3
Bicycle 101
4
Bicycle 101
The basic principle, as simply as possible
5
Bicycle 101
1866 Pierre Lallement invents the Velocipede
A historical perspective
6
Bicycle 101
Angular momentumL m v r
Key facts
7
Bicycle 101
Importance of acting like a cyclist
8
Bicycle 101
The 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
9
Bicycle 101
10
Bicycle 101
???
11
Bicycle 101
12
Bicycle 101
13
Science 101
Bicycle 101
14
Science 101
15
Science 101
16
The Lives of the Scientist
17
The Lives of the Scientist
18
Science 101
Our role
19
Science 101
Our role
20
Science 101
Our role
21
Science 101
Science is the belief in the ignorance of
experts. - Richard Feynman
Our role
A process,...not a body of facts
22
Science 101
Our role
Once you learn it it's yours for life
23
Energy
24
Energy
25
Energy
26
Energy
27
Energy
28
Importance of visualization in science
29
Importance of visualization in science
30
Visualizing Energy
31
Visualizing Energy
32
(No Transcript)
33
Visualizing Energy
High Energy State
Low Energy State
34
Visualizing Energy
(cheap refrigerator magnet)
High Energy State
Low Energy State
35
Visualizing Energy
(cheap refrigerator magnet)
High Energy State
Low Energy State
36
Visualizing Energy
High Energy State
Low Energy State
37
Visualizing Energy
High Energy State
Low Energy State
38
Visualizing Energy
High Energy State
Low Energy State
39
Visualizing Energy
High Energy State
Low Energy State
40
Visualizing Energy
41
Visualizing Energy
High Energy State
Low Energy State
42
Visualizing Energy
What are the components?
for other forms of energy?
High Energy State
Low Energy State
43
Visualizing Chemical Energy
Life The play of water
Eight electrons
44
Visualizing Chemical Energy
Life The play of water
Water The play of oxygen
O
-
Eight electrons


H
H
H2O
Low Energy State
45
Visualizing Chemical Energy
High Energy State
O2
O
-


H
H
H2O
Low Energy State
46
Visualizing Chemical Energy
High Energy State
O2
O
-


H
H
H2
H2
H2O
Low Energy State
47
Visualizing Chemical Energy
High Energy State
O2
O
-


H
H
H2O
Low Energy State
48
Visualizing Chemical Energy
High Energy State
O2
O
-
H2
H2


H
H
H2O
Low Energy State
49
Visualizing Photosynthesis
50
Visualizing Photosynthesis
How can light be put to work?
Low Energy State
51
Visualizing Photosynthesis
How can light be put to work?
52
Visualizing Photosynthesis
53
Visualizing Photosynthesis
Sympathetic vibration - resonance
http//www.bsharp.org/physics/swings
54
Visualizing Photosynthesis
Sympathetic vibration - resonance
0 0 0
http//www.bsharp.org/physics/swings
55
(No Transcript)
56
Visualizing Photosynthesis
Sympathetic vibration - resonance
Time
Distance from you
Force on swing
Push at same frequency
Transfer of energy through resonance
...if frequencies match
57
Visualizing Photosynthesis
Sympathetic vibration - resonance
Distance from you
Force on swing
Push at same frequency
Force on swing
Push at twice frequency
Force on swing
Push at half frequency
58
Visualizing Photosynthesis
Sympathetic vibration - resonance
Press silently
Bang then let go
Transfer of energy through resonance
...if frequencies match
59
Visualizing Photosynthesis
Sympathetic vibration - resonance
60
Visualizing Photosynthesis
Sympathetic vibration - resonance
Infrared(low frequency, low energy)
(high frequency, high energy) Ultraviolet
Transfer of energy through resonance
...if frequencies match
61
Visualizing Photosynthesis
Sympathetic vibration - resonance
Which color light will be absorbed (put to use)?
Chlorophyll
Transfer of energy through resonance
...if frequencies match
62
Visualizing Photosynthesis
Sympathetic vibration - resonance
Which color light will be absorbed (put to use)?
Carotenoids
Transfer of energy through resonance
...if frequencies match
63
Visualizing Photosynthesis
64
Visualizing Photosynthesis
High Energy State
Low Energy State
65
Visualizing Photosynthesis
High Energy State
Low Energy State
66
Visualizing Photosynthesis
Glucose
High Energy State
Fate of glucose?
CO2
Low Energy State
67
Visualizing Photosynthesis
High Energy State
Fate of chlorophyll?
Low Energy State
68
Visualizing Photosynthesis
High Energy State
Fate of chlorophyll?
Low Energy State
69
Visualizing Photosynthesis
How to test this?
Glucose
High Energy State
Low Energy State
70
Visualizing Photosynthesis
71
Visualizing Human Photosynthesis
72
Visualizing Science in the Classroom
73
Jeff ElhaiCenter for the Study of Biological
ComplexityVirginia Commonwealth
University ElhaiJ_at_VCU.Eduhttp//www.people.vcu.e
du/elhaij 804-828-0794