Dictionary » T » Tar

Tar

tar

A thick, black, viscous liquid obtained by the distillation of wood, coal, etc, and having a varied composition according to the temperature and material employed in obtaining it. Coal tar.

(Science: chemical) mineral tar, a kind of soft native bitumen. Tar board, a strong quality of millboard made from junk and old tarred rope. Tar water. A cold infusion of tar in water, used as a medicine. The ammoniacal water of gas works. Wood tar, tar obtained from wood. It is usually obtained by the distillation of the wood of the pine, spruce, or fir, and is used in varnishes, cements, and to render ropes, oakum, etc, impervious to water.

Origin: OE. Terre, tarre, AS. Teru, teoru; akin to D. Teer, G. Teer, theer, Icel. Tjara, Sw. Tjara, Dan. Tiaere, and to E. Tree. 63. See Tree.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re: question for evolutionary biologist.

... assembled from chemically synthesized oligonucleotides. The complete synthetic genome was assembled by transformation associated recombination (TAR) cloning in the yeast Saccharomyces cerevisiae, then isolated and sequenced. A clone with the correct sequence was identified and transplanted in ...

See entire post
by scottie
Thu Sep 13, 2012 1:22 pm
 
Forum: Evolution
Topic: question for evolutionary biologist.
Replies: 26
Views: 27785

Maximum Life Span of Animals, Fishes and Birds.

... of animals to gradually weaken and ultimately fail. Free radicals can also be the result of excessive UV exposure and toxins, like nicotine, tar, pesticides, pollution, and natural toxins found in our bodies and in food. As free radicals are essentially just oxygen atoms missing an electron ...

See entire post
by Squirrell
Wed Feb 15, 2012 2:07 am
 
Forum: Zoology Discussion
Topic: Maximum Life Span of Animals, Fishes and Birds.
Replies: 9
Views: 8082

Flaws of Life in a Tube

... how did the early organisms know or create an element that did not exist on earth? 2)In the Miller-Urey experiments, their tube contained 85% tar. The tar pits contain tar. The tar pits encased life at the instant it stepped into it. Even if a complex organism with complex organelles (cell) ...

See entire post
by Tomn
Mon Oct 10, 2011 8:34 pm
 
Forum: Evolution
Topic: Flaws of Life in a Tube
Replies: 41
Views: 41300

Flaws of Life in a Tube

... hydrothermal vents, but they did not in any way require O2. In fact, O2 was probably poisonous to the organisms due to its oxidizing power. The tar pits that you have used in your point #2 have nothing to do with the Miller-Urey experiments. As for point #4, the amount of DNA in a typical human ...

See entire post
by aptitude
Mon Oct 10, 2011 2:54 am
 
Forum: Evolution
Topic: Flaws of Life in a Tube
Replies: 41
Views: 41300

Flaws of Life in a Tube

In reference to the presence of tar: tar does not represent the majority of the conditions around the world. The tar pits are rare to California. It is not an accurate representation of life on Earth. Yes, there are anaerobic bacteria. However, ...

See entire post
by Tomn
Sun Oct 09, 2011 7:03 pm
 
Forum: Evolution
Topic: Flaws of Life in a Tube
Replies: 41
Views: 41300
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 2,799 times. 
What links here | Related changes | Permanent link