For blonde hair, or to add subtle highlights, mix 1/2 cup of strong chamomile tea, Â¼ cup fresh lemon juice, and Â¼ cup coconut oil in a blender until emulsified. Apply to hair and roots and cover with a shower cap. Sit in the sun, or use a hair dryer to keep the cap warm for 45 minutes to 75 minutes.
Ballasts limit the current through an electrical load. These are most often used when a load (such as an arc discharge) has its terminal voltage decline when current through the load increases.
Because of the power that would be lost, resistors are not used as ballasts for lamps of more than about two watts. Instead, a reactance is used. Losses in the ballast due to its resistance and losses in its magnetic core may be significant, on the order of 5 to 25% of the lamp input electric power.