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Oxygen Discovered by the Batman of the 18th Century
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Scientists in the late 170Os were fascinated by fire. When wood burns, they noticed that ashes weighed less than wood. This led to the idea that burning things gave off a substance that they called phlogiston. Flammable things were thought to contain phlogiston, and fire released the phlogiston.
But metals behaved differently when they burned, leaving behind an ash called calx. When metals burned, scientists thought that they produced the calx plus phlogiston. But the calxes always weighed more than the metals. If the metal is giving off a substance, it should weigh less, not more.
This ...
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Reproduction antiques find clientele
Newspaper article from: Chicago Sun-Times
; ...Worth, Texas, reproduction antiques are a...which sells reproductions of mostly English...doesn't sell reproductions. "They would...me `Is this a reproduction?' " Zoglin said...would not buy a reproduction, and, except...people buy them (reproductions) just because...
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Norplant and irresponsible reproduction.(Long-Acting Contraception: Moral Choices, Policy Dilemmas)
Magazine article from: The Hastings Center Report
; ...certain women use Norplant to avoid reproduction that is considered socially irresponsible...proposals to control "undesirable" reproduction have varied from enthusiastic approval...or even eliminate such irresponsible reproduction, particularly with an easily reversible...
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Japanese Inventors Develop Reproduction Speed Conversion Apparatus
News Wire article from: US Fed News Service, Including US State News
; ...Osaka, Japan, have developed a reproduction speed conversion apparatus...amp; Trademark Office: "A reproduction speed conversion apparatus includes...decoding section; an audio reproduction speed conversion section; a...
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Estimation of genetic parameters for four reproduction component traits in two Chinese indigenous pig breeds *.(Report)
Magazine article from: Asian - Australasian Journal of Animal Sciences
; ABSTRACT : The reproduction component traits are important components...phenotypic and genetic parameters of four reproduction component traits (age at puberty...antagonism. (Key Words : Sow, Reproduction Component Trait, Heritability...
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Antique reproductions have beauty, investment potential
Newspaper article from: Chicago Sun-Times
; ...Winterthur mansion, Baker makes reproductions from England's Stately Homes...Square Furniture introduced a reproduction line for Monticello. "These...from Monticello. Not all fine reproductions are new. From 1937 to 1990...
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Principles of color reproduction--revisited
Magazine article from: GATFWORLD
; ...classic text, Principles of Color Reproduction. In the following article, originally...prominent role Principles of Color Reproduction held throughout his professional career...continue to hold for those in the color reproduction field. Principles of Color Reproduction...
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Elimination of altered karyotypes by sexual reproduction preserves species identity.(RAPID COMMUNICATION)(Clinical report)
Magazine article from: Genome
; ...Abstract: Resolving the persistence of sexual reproduction despite its overwhelming costs (known as...diverse genomes owing to less controlled reproduction systems, while sexual reproduction generates more stable genomes because the...
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Flexibility trumps fitness in sexual reproduction, says new theory in evolutionary biology.
Newspaper article from: NewsRx Health & Science
; ...often been assumed that sexual reproduction should somehow facilitate the...different individuals, sexual reproduction could create a very successful...of genes. But just as sexual reproduction will create that very successful...
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WILD TURKEY REPRODUCTION IN STATE POOR THIS SUMMER
News Wire article from: US Fed News Service, Including US State News
; ...Department of Natural Resources survey, reproduction by wild turkeys was poor for the second...Summer Turkey Brood Survey to estimate reproduction and recruitment of turkeys in South...year, it appears that wild turkey reproduction was poor to very poor in most regions...
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A Glass Half Empty: Latina Reproduction and Public Discourse
Magazine article from: Human Organization
; Latina reproduction and fertility have become ground...that includes issues of stratified reproduction, which characterize some women as...The final section examines data on reproduction and fertility collected from Latinas...
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