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The shade of the purple color is dependent on the level of sunlight exposure. [2] This means that panes of solarized glass will turn a darker purple if they receive heavy exposure to light, such as on the south facing façade of a building. Likewise, a recessed window will receive less light and therefore turn a lighter shade of purple.
A photochromic eyeglass lens, after exposure to sunlight while part of the lens remained covered by paper. Photochromism is the reversible change of color upon exposure to light. It is a transformation of a chemical species ( photoswitch ) between two forms by the absorption of electromagnetic radiation ( photoisomerization ), where the two ...
For example, to see "hyperbolic orange": staring at bright cyan causes an orange afterimage, then on looking at orange, the resulting orange afterimage seen against the orange background may cause an orange color purer than the purest orange color that can be made by any normally seen light.
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California brush fires struck on Tuesday, with a second fire breaking out near Pasadena, forcing some residents to flee by foot as evacuation routes are stunted highway closures.
At 7:15 a.m. EDT on Saturday, July 8, around 99% of the Earth's population will see sunlight in the sky - as long as it isn't cloudy. This equates to approximately 7.9 billion people across North ...
This is termed arc eye, while photokeratitis caused by exposure to sunlight reflected from ice and snow, particularly at elevation, is commonly called snow blindness. [5] It can also occur due to using tanning beds without proper eyewear. Natural sources include bright sunlight reflected from snow or ice or, less commonly, from sea or sand. [6]
President-elect Donald Trump’s pick to head the Department of Homeland Security, Kristi Noem, is set to go before a Senate committee for a confirmation hearing Friday.