The World's Longest-Burning Light Bulb Has Shone for 110 Years. Adolphe A. Chaillet's carbon filament bulb long outlasted the man himself. Incandescent light bulbs may be fading away, killed off slowly by fluorescents and LEDs, but there's one old-fashioned bulb that refuses to go out. In fact, it's been going for more than a century. The world's longest-burning light bulb has been shining since 1901, when it was first turned on in Livermore, Calif.
Phenotypic ratio of F2: 3 tall : 1 dwarf. Mendel's First Law - the law of segregation; during gamete formation each member of the allelic pair separates from the other member to form the genetic constitution of the gamete. Confirmation of Mendel's First Law Hypothesis. With these observations, Mendel could form a hypothesis about segregation.
Hubble's law is considered the first observational basis for the expansion of the universe and today serves as one of the pieces of evidence most often cited in support of the Big Bang model. The motion of astronomical objects due solely to this expansion is known as the Hubble flow.