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Death of a lightbulb: the full story.

Matt:

Why does a lightbulb burn out just as you turn it on and never when it's been on for a while?

-- LLN, La Jolla

As a lighted bulb glows away, minute bits of the metal filament fly off and deposit themselves on the inside of its little glass prison. The filament gets thinner and weaker as it burns until one day you flip the switch, current surges through a wire that's too thin to bear it, and the bulb's little brains explode. If you listen carefully, you can sometimes hear a faint scream.

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Padres continue defiance of baseball’s unwritten rules, sparking concerns among MLB brass

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Matt:

Why does a lightbulb burn out just as you turn it on and never when it's been on for a while?

-- LLN, La Jolla

As a lighted bulb glows away, minute bits of the metal filament fly off and deposit themselves on the inside of its little glass prison. The filament gets thinner and weaker as it burns until one day you flip the switch, current surges through a wire that's too thin to bear it, and the bulb's little brains explode. If you listen carefully, you can sometimes hear a faint scream.

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4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs
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