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ការរមលេក
ធ្វកធូ 2
ការរមលេក
My childhood memories of the fourth of July conjure up cool evenings and hundreds of fireworks – simulated bombs bursting in air in all their Francis Scott crucial splendor. annually this experience occurred with religious fervor, as my three brothers, mommy and dad, and even the family pet dog piled into the family sedan and the family drove off to the nearest park to enjoy the fireworks.
In the early 1970’s my family had a large boat-like convertible. With the top down, we’d park on a hill and ignore a larger region, taking in multiple fireworks displays. This spectacle was spectacular for young kids.This year this Fireworks merchant gave us a great deal so thanks to that we will have a lot for for display.
Every part of the early experience was fired by gasoline, powered by petroleum, or involved gunpowder and various chemicals. quick flashes of light are created from the pop of gunpowder and the eye burning bright flash from burning magnesium powder. green colors are from powdered copper that is impregnated on paper that is wrapped into the firework. As the fuse burns the fire encountered each of the impregnated papers, and each gives off the various colors as they ignite, associated with the special color of each element as it combusts. Cobalt for dark blue; copper for greens and red; លល។
Memories of a green fourth of July
While the excitement of the display was initially captivating, as I grew older, enjoying the excitement experienced by others became equally or a lot more entertaining. parents usher children to focus and pay attention to the event, keeping them from spiraling into skirmishes and disinterest and distractions. The youngest children sit there like jello blobs with bobbing heads, as result of sleepiness as they were out past bedtime, and a wrenched neck from looking up, often for hours, as every firework is launched.
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Another summer favorite – lightning bugs. and while I understand that enjoying lightening bugs is different from enjoying fireworks, in lots of ways it is the utmost fireworks display. There before you are tens of thousands of illuminating insects dancing’s skittering across the sky, some moving swiftly horizontally, others flying upward twenty to thirty feet and then descending rapidly toward the ground.
I began to develop another level of appreciation for these nightly displays when I enjoyed the bobbing headed young children, the five to ten-year-olds, and then adults becoming completely absorbed and entranced by the bugs. The initial silence and awe was often followed by questions, “Why do that do that? how do they do that?”
Informative spectators describe that males lightning bugs are displaying with one signal type and the females with another. then the biochemistry is explained: the light is produced by a little insect using laboratory precision mixing of luciferin and an enzyme called lucinerferinace. The light is a exact chemical reaction involving no ignited wick, no gasoline, or no gunpowder. No heat, no waste products–just a few chemicals manufactured within the body of lightning bugs as an attraction mechanism for finding mates.
We still gather the kids, and neighbors come to visit during the summer, to see the lightning bugs. But, instead of jumping in the car, we walk to the nearest hill on our southern Wisconsin farm shortly after sundown. It is about then when the first flashers come out. initially you can only see the closest ones, but as the darkness deepens, thousands come into focus every second. particularly in areas with healthiest and restored ecosystem, along the stream courses, around the perimeter of wetlands, and in diverse wildflower growth areas, the displays are heavenly. Neighboring corn and soybean fields harbor some but far less, then the displays over higher quality habitat. and the grand finale doesn’t end, as the display goes on all night, with some insects still attempting to eke out their mate attraction behavior as the sun is coming up the next morning.
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In a time when energy conservation, and minimized emissions of atmospheric gasses is important, celebrating the fourth – or the happiness of any other mid summer evening – is possible by seeking out lightning bug displays. After the childរ៉េនចាប់ផ្តើមពីការប៉ះទង្គិចគ្នានិងភាពធុញទ្រាន់ក្នុងការបង្ហាញកាំជ្រួចឬអ្នកឃើញថាខ្លួនអ្នកកំពុងព្យាយាមរកភាពស្ងប់ស្ងាត់ពីរបីនាទីទៀតរកឃើញវាលមួយដែលមានសភាពស្ងប់ស្ងាត់ហើយរីករាយនឹងការបង្ហាញកាំជ្រួចពណ៌បៃតងដ៏ពិតប្រាកដ។
ដោយ steven apfelbaum សម្រាប់ទស្សនាវដ្តីម៉ាក់ដែលមានសុខភាពល្អ
លោក Steven Apfelbaum គឺជាស្ថាបនិកនៃក្រុមហ៊ុនអេកូអេកូប្រឹក្សាអេកូឡូស៊ីអ៊ិនធឺរណែតការប្រឹក្សាយោបល់ផ្នែកបរិស្ថាននិងអេកូឡូស៊ីពេញលេញជាមួយការិយាល័យចំនួន 10 នៅសហរដ្ឋអាមេរិកនិង 2 នាក់នៅក្រៅប្រទេស។ Apfelbaum គឺជាសហអ្នកនិពន្ធការស្តារសុខភាពអេកូឡូស៊ីឡើងវិញចំពោះស៊េរីដីរបស់អ្នកដែលផ្គត់ផ្គង់ការណែនាំជាជំហាន ៗ ក្នុងការស្តារបរិស្ថានវិទ្យានិងការថែរក្សារុក្ខជាតិដើម។ គាត់ក៏ជាអ្នកនិពន្ធសៀវភៅដែលឈ្នះពានរង្វាន់នេះមានឱកាសលើកទី 2 ដែលរៀបរាប់ពីរបៀបដែលគាត់និងក្រុមគ្រួសារបានស្តារកសិដ្ឋានទឹកដោះគោទៅជាដីព្រៃស្ទ្រីមស្ទ្រីមស្ទ្រីមនៅយូដូនៅក្បែរយូដូ។ សៀវភៅទាំងពីរមាននៅ www.amazon.com ។
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