英语好文分享：观日全食的全纪录

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这次的日全食不知大家看了没？我在北京，一大早就阴天，云层巨厚，根本啥也看不见。更何况预报的日食时间我正在公交车上，根本没可能。但是，但是！！我到了办公室，看见同事正在看网上直播，当时都已经九点半了，还有呢！！我就赶紧扑到窗户跟前——外面还是看不见 ：（，真羡慕能看到的朋友~~据说22日的这次日食是本世纪最长的日全食。最早看见日全食的是印度坎贝湾。日食带穿过印度次大陆、尼泊尔、孟加拉国、不丹和缅甸，从中印边境进入中国，是500年一遇的大日食奇观。此后，我国将在2034年3月20日才能再次目睹日食，但仅西藏、青海等地区能看到全食。无论是可观测城市的数量，还是全食持续时间，都无法与今年即将发生的日全食相比。这么多年我好像只看到过一次日食，那时候是用棕色的啤酒瓶底儿看得好象。可能也有好多朋友没看到日食吧？我秦苏珊认识的朋友的博客上转贴了一篇英文文章，写的是这次看日全食的全程纪录。我转录过来，让大伙重温一下~
The Eclipse Chaser: We Have an Eclipse!

Jay M. Pasachoff
Two stages of a total solar eclipse, seen from the mountains of China.

By Jay M.Pasachoff

The longest total solar eclipse this century started in India, sweeping east across China and into the Pacific Ocean. Blogging about the event for TierneyLab is Jay M. Pasachoff, a Williams College astronomer who is chasing the eclipse from a mountain outside Hangzhou, China.

9:49 a.m. Wednesday (9:49 p.m. Tuesday, E.D.T.)

We saw it! The clouds kept getting thinner, and we even had a pretty good-sized hole in the clouds for the five minutes of totality. So everyone saw all the coronal phenomena. The diamond rings were spectacular. Just before totality, the clouds were just the right thickness that allowed us to see partial phases without filters.

All our equipment and those collaborating on our terrace here in Tianhuangping seems to have worked, so now we still have an hour or so of partial eclipse to image, and then we will download photos and start looking at them. The oscillation experiment has a lot of data through two filters, and we will assess later whether comparison of the two channels allow us to account for the cloud cover.

It was wonderful.

9:07 a.m. (9:07 p.m. Tuesday, E.D.T.)

In half an hour, we’ll be in the midst of totality. The sun has come and gone a bit, through clouds and behind clouds, but we mostly have sun. We remain hopeful that we can see and photograph the corona. When we have lost view of the sun, it has been for a couple of minutes only, and this is, after all, a 5 1/2 minute eclipse.

8:05 a.m. (8:05 p.m. E.D.T.)

We have an eclipse! It is four minutes past first contact, and we can all clearly see a bite out of the top of the Sun, at about 11 o’clock orientation. The sky is hazy, but we can see the shape of the Sun very clearly through the haze. We should see the corona very well, if this sky condition continues.

7:33 a.m. (7:33 p.m. E.D.T.)

Just two hours before totality, and the Sun is out! It is still through clouds, but the sky is definitely improving.

7:00 a.m. (7 p.m. Tuesday, E.D.T.)

The sky is a little brighter, but there are still two layers of clouds. At least we can see structure in the clouds, and we hear that there is some clearing behind the front that is now passing through. We have 2 1/2 hours to go.

Though we can’t see the eclipse visually if the sky is completely cloudy, we do have one meteorological experiment that will work anyway. We will be measuring the temperature falloff that results from the eclipse. Michael Thomas Roman, a grad student from Cornell, and Marcos Peñaloza, a professor from Universidad de los Andes in Mérida, Venezuela, are here with us, and Michael as brought some devices to follow the temperature. At last year’s eclipse, Joe Ciotti, a college student from Hawaii, measured the temperature just under the ground and at a few centimeters above the ground. The temperature in the part of the eclipse path in China where they were dropped by about 10 degrees Fahrenheit over what it would have declined to in the late afternoon for that eclipse, reaching a low point about 10 minutes after the end of totality (the expected thermal lag), and then rising again. Marcos and Michael spent a lot of time walking around a few days ago to find the right place for their sensors.

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关键词：日全食 oscillation orientation experiment Comparison 英语 分享 纪录 日全食