(CNN) -- As I research my family history, preparing a book about my grandmother Madeleine Edison Sloane, "Edison's Daughter," I occasionally come across holiday pictures of Glenmont. This was my great-grandfather Thomas Edison's home in West Orange, New Jersey, and in the pictures it's decorated for the Christmas and New Years' Holidays. Thanks to his invention, the home bursts with light in those pictures; the radiance is almost palpable. All the bulbs were incandescent, of course. There wasn't any other kind, and candles would have been way too dangerous. Light and safety, and low cost, were all great features of Edison's light bulbs.
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David Sloane says his great-grandfather, Thomas Edison, would have liked efficient bulbs
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He says new efficiency law to take effect January 1, was in line with Edison's futurism
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He says Edison would have disdained Congress' recent vote to defund law for nine months
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Sloane: Technological, green, entrepreneurial advances are Edisonian
To my eye, they are just as bright as the ones in the Edison family's Glenmont home at @placeholder, maybe brighter.