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User:J Hill

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Welcome to my userpage. I became a Wikipedian on 22 August 2006; However, I have been contributing to Wikipedia since 18 February, 2006. Recently, I have begun "punching up" stubs in Wikiproject Chemicals.


Featured Article[edit]

Marasmius rotula

Marasmius rotula, the pinwheel mushroom, is a fungus in the family Marasmiaceae. Widespread in the Northern Hemisphere, it was first described scientifically in 1772 by Giovanni Antonio Scopoli. The mushrooms are characterized by thin whitish caps up to 2.0 cm (0.8 in) wide that are sunken in the center and pleated with scalloped margins. The wiry black hollow stalks measure up to 8.0 cm (3.1 in) long by 1.5 mm (0.06 in) thick. On the underside of the caps are widely spaced white gills, attached to a collar encircling the stalk. The mushrooms grow in groups or clusters on decaying wood such as moss-covered logs and stumps. Spore release is dependent upon sufficient moisture. Dried mushrooms may revive after rehydrating and release spores for up to three weeks, much longer than most gilled mushrooms. Although the mushrooms are not generally considered edible, they produce a unique peroxidase enzyme that is attracting research interest for use in bioengineering applications. (Full article...)

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In the News[edit]

Narendra Modi
Narendra Modi

Selected anniversaries[edit]

June 10: Dragon Boat Festival in China and Taiwan (2024)

John Diefenbaker
John Diefenbaker

More anniversaries:

Gallery[edit]

Oblique shock
An oblique shock is a shock wave that, unlike a normal shock, is inclined with respect to the direction of incoming air. It occurs when a supersonic flow encounters a corner that effectively turns the flow into itself and compresses. This photograph shows an oblique shock at the nose of a Northrop T-38 Talon aircraft, made visible through Schlieren photography.Photograph credit: NASA & US Air Force (J.T. Heineck, Ed Schairer, Maj. Jonathan Orso, Maj. Jeremy Vanderhal)


Wikipedia vandalism information
(abuse log)

Level 4
Level 4

Low to moderate level of vandalism

[viewpurgeupdate]


2.08 RPM according to EnterpriseyBot 09:10, 10 June 2024 (UTC)

Sub pages[edit]

Quotes[edit]

  • “The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.” — Isaac Asimov
  • “When I read about the way in which library funds are being cut and cut, I can only think that American society has found one more way to destroy itself.” — Isaac Asimov
  • “John Dalton's records, carefully preserved for a century, were destroyed during the World War II bombing of Manchester. It is not only the living who are killed in war.” — Isaac Asimov
  • “Courage is not the lack of fear. It is acting in spite of it.” — Mark Twain
  • “The more you know, the more you realise that you know nothing.” — Socrates
  • “The important thing is not to stop questioning.” — Albert Einstein
  • “We must respect other religions even as we respect our own. Mere tolerance thereof is not enough.” — Gandhi
  • “The wisest mind has something yet to learn.” — George Santayana

Other wikis[edit]

This user has a page on Wikibooks.