Bar graph showing wattage for typical lights.
Y-axis (vertical) starts at 0 and goes up to 120. X-axis (horizontal) lists long-life
incandescent bulbs on the left, then incandescent, compact fluorescent, tube t12
fluorescent, tube t8 fluorescent, tube t5 fluorescent, high-intensity discharge
metal halide, and high-intensity discharge high-pressure sodium on the right.
to basic husbandry for commercial layers fact sheet