change of colour
71Acid-base titration — [ frame|100px|frame|Titration setup. The burette would normally be held by a clamp, not shown here. The pink is most likely caused by use of the phenolphthalein indicator.] An acid base titration is a method in chemistry that allows quantitative… …
72Traditions of Derry City F.C. — This article documents numerous traditions of Derry City Football Club, including the culture associated with and surrounding the club, and its supporters.The club s nameWhen the club was first founded in 1928, it named itself Derry City Football …
73Weather testing of polymers — is the controlled polymer degradation and polymer coating degradation under lab or natural conditions.Just like errosion of rocks, natural phenomena can cause degratation in polymer systems. The elements of most concern to polymers are… …
74Über das farbige Licht der Doppelsterne und einiger anderer Gestirne des Himmels — is a treatise by Christian Doppler (1842) [Some sources mention 1843 as year of publication because in that year the article was published in the Proceedings of the Bohemian Society of Sciences. Doppler himself referred to the publication as Prag …
75Don Dunstan — Not to be confused with Donald Dunstan (Australian Governor), army officer and Governor of South Australia. Don Dunstan 35th Premier of South Australia Elections: 1968, 1970, 1973, 1975, 1977 In office …
76Olive fruit fly — Adult on leaf Scientific classification Kingdom: Animalia …
77treated gem — ▪ gemology also called Treated Stone, genuine gem material whose colour has been artificially enhanced or produced to increase the value of the stone; staining, heat treatment, and irradiation are among the treatments used.… …
78turn — /tɜn / (say tern) verb (t) 1. cause to move round on an axis or about a centre; rotate: to turn a wheel. 2. to cause to move round or partly round, as for the purpose of opening, closing, tightening, etc.: to turn a key. 3. to reverse the… …
79fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with …
80Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… …
