Category: 自然

One of the seven wonders for me is、Human ear shape。cats, cows and horses、There's nothing strange about elephant ears.、For some reason, the shape of human ears is curled up.、It's hard to imagine how it came to that shape (the rationality of evolution).。

ears、If it is an organ that senses sound (or air) waves,、Fish also have ears。Of course there are birds too.。Not only does it exist in both reptiles and insects, but、Even a horned owl? (Some scholars say it exists in plants too, but、I won't go into depth here)。fish ears、There is a place inside the head called the inner ear.、It seems to work almost like the human ear.。Also called lateral line、both sides of the body、They detect subtle changes in water pressure with sensory organs connected like a single line from head to tail under their scales.、It seems that human voices can be detected here as well.。In addition, a floating bladder can be used to amplify external sounds.、It is said that some fish can hear with their inner ears through nerves in their bodies.、It can be said that fish have multiple ears.。

Teleost fish have otoliths in their heads.、This keeps you in position underwater.。As a side note、fossil hunter、Not a rock hunter、People with a hobby called otolith hunters、Collecting otoliths of different shapes for each species of fish、Apparently there is also a world of maniacs who brag about the beauty of their shapes.。—In the human semicircular canals (not only in humans)、Probably most animals have otoliths、have almost the same functionality。If this peels off、Feeling dizzy。A fish that swims while swimming、Naturally, it is impossible to catch food.。``I'm glad I was born as a human'' and I want to thank God for having ``vertigo outpatient treatment.''。

Bird ears are inconspicuous。Apparently, the questioner thinks that "the concrete result of sketching" brings fun.、When I comb the feathers、There is a gaping hole on the side of the head, almost like a human ear.。The long-eared owl is a member of the owl family.、Exceptionally among birds, the ears stick out.。This is the origin of the name "eared owl".、Considering their lifestyle, which relies more on sound than eyes to determine the location and size of prey,、Even if you discount air resistance, there is probably some rationality.。-in any case、Considering the behavioral patterns and ecology of animals、The origin of those ear shapes、I feel like it's pretty convincing。

Nevertheless、Why are human ears shaped like this?。The shape of a magatama (magatama) looks like the Arabic numeral 6 (the number we rely on the most on a daily basis) is carved out twice (the god of manga).、Osamu Tezuka's character's ears)、What kind of rationality is there?。I feel this every time I sketch a person.、A long-standing “mystery”。

2entering the moon、I continue to be indebted to Sazae-san.。As shown in the picture、Literally "Sazae"。It all started when my wife said, ``It's a live turban shell.、I bought it because it was unsold and cheap.。Can you make sashimi? ” and placed it on the table.。Honestly, "Eh...、"You're buying something that's a hassle," I thought, but didn't say it out loud.、For now, I just replied “hmm”。

I took a chance and secretly searched for something like ``peeling the shell of a turban shell'' on YouTube.。“Hey、How do I take it out like this?。” In the video、The person who seems to be the owner of the restaurant quickly cuts off the neck of the turban shell.。Then I put my little finger in and squeeze it.、All internal components can be removed easily and cleanly.。I thought there might be a trick.、I decided to try it out by watching and imitating it.。

It looks like a Japanese restaurant until you cut off the neck (the muscular part that looks like it).。However、No matter what I do, I can't get it out from the shoulders down.。Any more than this and my fingers will be torn off.、So I had no choice but to crush it with a hammer.。The cutting board becomes uneven.、A small piece of the shell slipped into my body.、I almost cut my finger with it when I wash it.、In short, I had a bad experience.。

However、I bought it again a few days later! "It's down to around 100 yen each.、It looks like you're still fine。”Eh! I'm going to cut off my own finger this time、I thought so, but、don't say it out loud、For now, I just replied “hmm”。He liked the taste of crunchy sashimi.。But、This time I stopped using only the hammer.。While making a girlish cut on my little finger.、I managed to get it out。

However、I bought it again a few days later! “Half price...。” Don’t say it out loud、“Hmm,” I replied rawly.、わたしもだんだんやり方がわかってきたのだった。小指の切り傷は恋の思い出なんかじゃないのだぜ ― 少しアルコールの入ったドングリ目でよく見ると、敵はなんとなくコロナに似ているようにも見える。「コロナに打ち勝った証」にはワサビが合う。つい「また買ってきて」と思ったが、口には出さなかった。

午後から、どこで星を見るか候補地を探した。茨城県五霞町の江戸川土手から、スマートフォンで撮影した。他には誰もいず、まさに専用展望台。星が二つ並んで見えるが、大きいほうが木星。残念ながら最近は右目の視力が落ち、肉眼ではふたつであることを見極められない。大小2個の双眼鏡を持って行ったので、それでやっと２つであることが確認できた。

地平線近くに雲があり気になっていたが、日の入りに近くなってすうっと薄くなってくれた。この日の日没時刻は16：31。到着は16:18。星が見え始めるまで、うす暗いなかに雪をこすりつけたような日光連山のシルエットが、切れることなく末端まで見えた。Surprisingly、なんと日光白根山が見えるではないか。連山中央（男体山はずっと右に見える）、少し奥まって雪をかぶった姿は、さすが関東以北最高峰（2578m）の堂々とした威容。この機会がなければ気づかないままだったかもしれない。昨日はついていなかったが、今日はおまけ付き。

2021年の11月12日~14日にかけては、東の空に月、金星（明けの明星）と水星が並んでみえるそうだ（国立天文台）。星が爆発して最後を迎えるとき、地球では天体ショーとかいって皆で楽しむ。時のスケールを小さくすれば、世知辛くわびしく見える世の中も、宇宙時間で見れば損も得もへったくれもない。世はコロナで大騒ぎだが、もう少し長い時間尺で見れば、きっと良い教訓を得られるはずだと考えて、あと1週間を過ごす。