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Light fixtures may also have other features, such as reflectors for directing the light, an aperture (with or without a lens), an outer shell or housing for lamp alignment and protection, an electrical ballast or power supply, and a shade to diffuse the light or direct it towards a workspace (e.g., a desk lamp).
Fleming's left-hand rule. Fleming's left-hand rule for electric motors is one of a pair of visual mnemonics, the other being Fleming's right-hand rule for generators. [1] [2] [3] They were originated by John Ambrose Fleming, in the late 19th century, as a simple way of working out the direction of motion in an electric motor, or the direction of electric current in an electric generator.
A brushless DC electric motor (BLDC), also known as an electronically commutated motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields that effectively rotate in space and which the permanent magnet rotor follows.
In 1969, after years primarily as a manufacturer of recliners, La-Z-Boy started designing other products including reclining sofas, sleep sofas and modular groups. [3] 1981 sales were $150 million. [4] In 1983, La-Z-Boy introduced its first line of stationary sofas and occasional chairs, later offering a full line of home furnishings. [3]
Knightley said, before imitating her daughter shunning her from the dance floor at the disco. “'Mom, mom you are so embarrassing, just go and stand in the corner,'” Knightley recalled. "It was ...
A recliner Recliner aboard a business jet. A recliner is an armchair or sofa that reclines when the occupant lowers the chair's back and raises its front. [1] [2] It has a backrest that can be tilted back, and often a footrest that may be extended by means of a lever on the side of the chair, or may extend automatically when the back is reclined.
Left untreated, the condition can put you at risk for eye infections and damage the surface of your eye, according to Mayo Clinic so it’s important to see an eye doctor if you’re experiencing ...