A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. Unlike an incandescent lamp controlled by a dimmer, each of the filaments operates at full voltage, so the color of the light does not change between the three steps of light available. Certain compact fluorescent lamp bulbs are designed to replace 3-way incandescent bulbs, and have an extra contact and circuitry to bring about similar light level. In recent years, LED three way bulbs have become available as well.
can you put a regular light bulb in a 3 way?
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Answer: no

Before the first season of It's Always Sunny in Philadelphia went into production, McElhenney hired actress Kaitlin Olson to play the role of Dee Reynolds. He became romantically interested in Olson ''around season 2'' of the series, believing her to be the funniest woman in show business. They were married in California on September 27, 2008.
did dee and mac meet on the show?
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Answer: yes

The National Park Service acquired ownership of the lighthouse when it was abandoned in 1935. Today the Coast Guard owns and operates the navigational equipment, while the National Park Service maintains the tower as a historic structure. The Hatteras Island Visitor Center, formerly the Double Keepers Quarters located next to the lighthouse, elaborates on the Cape Hatteras story and the lifestyle on the Outer Banks. Cape Hatteras Lighthouse, tallest in the United States, stands 208 feet (63 m) from the bottom of the foundation to the peak of the roof. To reach the light, which shines 191 feet (58 m) above mean high-water mark, requires climbing 268 steps. The construction order of 1,250,000 bricks was used in construction of the lighthouse and principal keeper's quarters.
is the cape hatteras lighthouse still in use?
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Answer:
no