Your leaf/solar-cell needs:
[
CALC
]
#
Assume that
average sunlight is
[watts/m
^{2}
]
.
Food energy of
[Calories/day]
=>
[watts].
Photosynthesis
at
% efficiency
then requires
[m
^{2}
] or
a leaf
[feet]
in diameter
.
Electric energy of
[kwh/month]
=>
[watts].
Natural gas at
[cubic feet/month]
=>
[watts].
Gasoline at
[gallons/month]
=>
[watts].
Silicon capture
of
[watts]
at
% efficiency
requires
[m
^{2}
] or
a cell
[feet]
in diameter
.
Note2
: Corrections for flame-temperature free energy are not yet included.
Note
: Edit values in
red
&
green
text, then press
[
CALC
]
to update values & increment #.
Red
text values are used in subsequent calculations.
links:
recent
ancient
Content Modernization
:
Information Physics
: Life's Power Stream
Go Back
UM-StL Physics and Astronomy, Copyright (2003,2005) /pf
Mindquilts site
page requests ~2000/day approaching a million per year.
Requests for a "stat-counter linked subset of pages" since 4/7/2005:
.