The Drake Equation Backpack
Designed and sold by ScienceSource
$40.79
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$40.79
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Product features
- Carry your stuff, express yourself, keep your hands free, it's win-win-win
- Bag measures 17.7 x 11.8 x 4.9in / 45 x 30 x 12.5 cm
- Most standard laptops fit in the internal laptop pocket, which measures 13.5" x 10.5" / 34 x 27 cm
- Durable 100% polyester shell
- Vivid all-over design, sublimation printed for you when you order
- External mesh pocket and adjustable padded straps
- For a different style, check out the Drawstring Bag
- For more space, try the Duffle Bag
- Since every item is made just for you by your local third-party fulfiller, there may be slight variances in the product received
The Drake Equation
The Drake Equation is used to calculate the possible number of extraterrestrial civilizations in the Milky Way Galaxy.
N = R* fp ne fl fi fc L
N = number of civilizations with which humans could communicate.
R* = mean rate of star formation.
fP = fraction of stars that have planets.
ne = mean number of planets that could support life per star with planets.
fl = fraction of life-supporting planets that develop life.
fi = fraction of planets with life where life develops intelligence.
fc = fraction of intelligent civilizations that develop communication.
L = mean length of time that civilizations can communicate.
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