Lighting
Lighting
Gadgets
Food and Farming
How much power is currently consumed in giving us
our daily bread ?
How much energy do we actually consume in order to
get our 3 kWh per day?
Drinking Milk
A typical dairy cow produces 16 litres of milk per day
My one pint per day (half a litre per day) requires that I employ 1/32 of a cow.
To make 1 kg of Irish Cheddar takes about 9 kg of milk. So consuming 50 g of
cheese per day requires the production of an extra 450 g of milk.
Drinking Milk
A typical dairy cow produces 16 litres of milk per day
My one pint per day (half a litre per day) requires that I employ 1/32
of a cow.
To make 1 kg of Irish Cheddar takes about 9 kg of milk. So
consuming 50 g of cheese per day requires the production of an
extra 450 g of milk.
1/16 of a cow per day.
1 cow weighs 450 kg  ~21kWh/day
So, employing 1/16 cow corresponds to 1.5kWh per day.
Eggs
Egg production is 20% efficient !
Eating Meat
Half a pound = 227 g
Eating Meat
How an incandescent lightbulb works?
http://www.youtube.com/watch?v=aPaeIFjpoQ8&feature=plcp
How a fluorescent lamp works?
http://www.youtube.com/watch?v=BNpFoVdI2LY&feature=fvwrel
How LEDs OLEDs work?
http://www.youtube.com/watch?v=8quZrUcRFlw&feature=plcp