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sasaq:

京都 和久傳「わたぼうし」 (by lotus-aki)

sasaq:

京都 和久傳「わたぼうし」 (by lotus-aki)

starstuffblog:

DISCOVERY OF THE BENESOV METEORITES 20 YEARS AFTER THE BOLIDE EVENT

Astronomy & Astrophysics is publishing the spectacular discovery of meteorite fragments 20 years after the corresponding bolide was seen in the skies of the Czech Republic. This discovery was made possible by reanalyzing the trajectory, which moved the impact line by 330 meters. Interestingly, the meteorites found on the ground are of different types, pointing to a parent asteroid of heterogeneous composition.

Collisions of meter-sized meteoroids with the Earth’s atmosphere are relatively rare, occurring about 40 times a year. They cause very spectacular events, known as superbolides. One of the best known such events, the Benesov bolide, occurred on 7 May 1991 at 23h 03m 46s UT over the Czech Republic. It was recorded during systematic photographic observations by the European Fireball Network and certainly ended in a multiple meteorite fall, but no meteorite was found in the weeks and years after the fall, despite many attempts.

In February 2011, nearly 20 years after the event, P. Spurny and his colleagues measured the records again and analyzed the data with improved methods. This led to a new picture of the whole event with a revised atmospheric trajectory and a new impact location. This allowed the team to recover the Benesov meteorites, 20 years after the fall, exactly in the newly predicted area. It is the first time a meteorite is found so long after the bolide observation. The team found four small, highly-weathered meteorites with a total mass of 12 g. The probability that these four fragments come from different meteoroids and were found by chance at the same place is estimated to be 1 in 100,000 or less. Even more interestingly, these four meteorites are of three different mineralogical types. This means that the Benesov meteoroid was heterogeneous and contained at least three different types of material. After the Almahata Sitta fall, this is the second time that such a heterogeneous composition has been found. It raises the possibility that a significant fraction of all asteroids are heterogeneous and that they were strongly reprocessed by collisions with other asteroids in the main belt.

IMAGE…First three Benešov meteorites found in April 2011, with metal detectors. From left to right: H5 chondrite of 1.56 g, LL3.5 chondrite of 7.72 g with achondrite clast, and LL3.5 chondrite of 1.99 g

starstuffblog:

DISCOVERY OF THE BENESOV METEORITES 20 YEARS AFTER THE BOLIDE EVENT

Astronomy & Astrophysics is publishing the spectacular discovery of meteorite fragments 20 years after the corresponding bolide was seen in the skies of the Czech Republic. This discovery was made possible by reanalyzing the trajectory, which moved the impact line by 330 meters. Interestingly, the meteorites found on the ground are of different types, pointing to a parent asteroid of heterogeneous composition.

Collisions of meter-sized meteoroids with the Earth’s atmosphere are relatively rare, occurring about 40 times a year. They cause very spectacular events, known as superbolides. One of the best known such events, the Benesov bolide, occurred on 7 May 1991 at 23h 03m 46s UT over the Czech Republic. It was recorded during systematic photographic observations by the European Fireball Network and certainly ended in a multiple meteorite fall, but no meteorite was found in the weeks and years after the fall, despite many attempts.

In February 2011, nearly 20 years after the event, P. Spurny and his colleagues measured the records again and analyzed the data with improved methods. This led to a new picture of the whole event with a revised atmospheric trajectory and a new impact location. This allowed the team to recover the Benesov meteorites, 20 years after the fall, exactly in the newly predicted area. It is the first time a meteorite is found so long after the bolide observation. The team found four small, highly-weathered meteorites with a total mass of 12 g. The probability that these four fragments come from different meteoroids and were found by chance at the same place is estimated to be 1 in 100,000 or less. Even more interestingly, these four meteorites are of three different mineralogical types. This means that the Benesov meteoroid was heterogeneous and contained at least three different types of material. After the Almahata Sitta fall, this is the second time that such a heterogeneous composition has been found. It raises the possibility that a significant fraction of all asteroids are heterogeneous and that they were strongly reprocessed by collisions with other asteroids in the main belt.

IMAGE…First three Benešov meteorites found in April 2011, with metal detectors. From left to right: H5 chondrite of 1.56 g, LL3.5 chondrite of 7.72 g with achondrite clast, and LL3.5 chondrite of 1.99 g

turquoiseiolani:

*
和食だったら、がっつり食べていいわけじゃないんだけど…
*
過食が加速=͟͟͞͞ ( ꒪౪꒪)ฅ
*
早く仕事片付けなきゃ…
*
#igers #instadaily #photodaily #photooftheday #foodpic #yummy #breakfast #iphone5s #vscocam #和食

turquoiseiolani:

*
和食だったら、がっつり食べていいわけじゃないんだけど…
*
過食が加速=͟͟͞͞ ( ꒪౪꒪)ฅ
*
早く仕事片付けなきゃ…
*
#igers #instadaily #photodaily #photooftheday #foodpic #yummy #breakfast #iphone5s #vscocam #和食

reblogged from sasaq
kyoxxxxx-ig:

晩ごはん、新米!今日のメインは塩むすび。と、ネギだく粕汁。以上!
お米ははちこ家産。

kyoxxxxx-ig:

晩ごはん、新米!今日のメインは塩むすび。と、ネギだく粕汁。以上!
お米ははちこ家産。

tsukamoto:

通して読むと、種を仕込んだおかげで、あたかも丁寧にストーリーが組まれた話かのように見える流れが出来上がる。オチがちゃんと落ちる。書きたいシーンしか書かなくていい。すごくラク!!

(Twitter / かすりから)

あ、セミナー資料作るときがこんな感じだ。重要なのは3番目で、並び替えと仕込みをしていると、ちゃんとセミナー全体の筋が通る。

実際のところ、あらかじめ起承転結を練って作る人ばかりではないだろう。オチが決まってて(あたえられた課題や結論があって)、かき集めた説明ネタをスライドにしてという、この書き方の2番目までの進め方をしている人も多いと思う。ただ、そこで3番目、4番目のステップをするか、そのまま雑然と並べたスライドで終わりにするかで、差がつくことがありそうな気がする。

tsukamoto:

通して読むと、種を仕込んだおかげで、あたかも丁寧にストーリーが組まれた話かのように見える流れが出来上がる。オチがちゃんと落ちる。書きたいシーンしか書かなくていい。すごくラク!!

(Twitter / かすりから)

あ、セミナー資料作るときがこんな感じだ。重要なのは3番目で、並び替えと仕込みをしていると、ちゃんとセミナー全体の筋が通る。

実際のところ、あらかじめ起承転結を練って作る人ばかりではないだろう。オチが決まってて(あたえられた課題や結論があって)、かき集めた説明ネタをスライドにしてという、この書き方の2番目までの進め方をしている人も多いと思う。ただ、そこで3番目、4番目のステップをするか、そのまま雑然と並べたスライドで終わりにするかで、差がつくことがありそうな気がする。


(出典: aes-thetic)

comtesse-du-chocolat:

October’s treats…
(via pinterest)

comtesse-du-chocolat:

October’s treats…

(via pinterest)


(出典: -infuckti0n)

量子力学の世界は、たとえその理論にどれほど納得していようとも、人間にとっては永遠に直感に反するものであり続けるだろう。

『 世界でもっとも美しい10の科学実験 』 (via yellowblog)

大学で素粒子物理を学んだ最大の恩恵はこの「直感にどんなに反していてもそれが真実であるということはありうる」という理解だとずっと思っている。

(via yoosee)
●↑自分と地面の間にあるものは安物を使っちゃいけない。ベッド、タイヤ、靴だ。 「値段は高かったけど、買って良かったもの」:哲学ニュースnwk (via toxinner)