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The spiral CFL was invented in 1976 by Edward E. Hammer, an engineer with General Electric, [7] in response to the 1973 oil crisis. [8] Although the design met its goals, it would have cost GE about $25 million to build new factories to produce the lamps, and thus the invention was shelved. [9] The design was eventually copied by others. [9]
In 1976, he invented the first compact fluorescent lightbulb, but due to the difficulty of the manufacturing process for coating the interior of the spiral glass tube, GE did not manufacture or sell the device. Other companies began manufacturing and selling the device in 1995. [3] The Smithsonian Institution houses Hammer's original CFL prototype.
The above applies when the retailer is the source of the coupon, since the product is offered at the post-coupon price. In jurisdictions seeking to tax more, [25] if the coupon is issued by the manufacturer, the original price is still paid but some of the price is covered by the manufacturer instead of the consumer and the full price remains ...
For those times (and for generally impatient people) GE is introducing its Hybrid Halogen-CFL bulb. It's basically a typical CFL unit, but look closely inside those coils and you'll spot a wee ...
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The company's 1908 headquarters building at 212 King Street W in Toronto, designed by Darling and Person. Canadian General Electric Co. Limited (CGE) was incorporated in Canada in 1892 as a merger of Edison Electric Light Company of Canada (of Hamilton, Ontario) and Thomson-Houston Electric Light Company of Canada (of Montreal, Quebec), both incorporated in Canada in 1882.
In mathematics, the convergence condition by Courant–Friedrichs–Lewy is a necessary condition for convergence while solving certain partial differential equations (usually hyperbolic PDEs) numerically.