作者查詢 / dsilver
作者 dsilver 在 PTT [ TY_Research ] 看板的留言(推文), 共739則
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收起看板(743)
2F推: 新店以前有個氣象儀器維修站，不知道是不是和這個09/16 02:17
3F→: 新的結合在一起。當年測計上課有去參觀09/16 02:17
78F推: 可以換算幾個營養午餐？08/27 22:06
38F推: 你的盲點其實很簡單。你要搞懂什麼叫作「假想力」06/12 07:01
39F→: ，大部分高中生只是學個定義，然後被高中物理老師06/12 07:01
40F→: 越教越混亂。06/12 07:01
41F→: 1.假想力是在「加速座標」，和加速座標「相反方向06/12 07:01
42F→: 」，等值的力。06/12 07:01
43F→: 2.假想力的解釋，是對於「座標內的人」來解釋的，06/12 07:01
44F→: 如果你是一個地球人，那你可以用科式力來解釋。06/12 07:01
45F→: 如果你是月球人或是上帝視角，那你根本不應該考慮06/12 07:01
46F→: 科式力。06/12 07:02
47F→: 就好像汽車啟動，車內的人感覺有個往後的力。06/12 07:02
48F→: 對加速座標車內的人他自己會這樣解釋，他是受到假06/12 07:02
49F→: 想力往後推。06/12 07:02
50F→: 對於車外的人，他根本沒考慮到假想力，就是直接看06/12 07:02
51F→: 到加速座標的車把車子裡的人載走。06/12 07:02
52F→: 第二點是你自己看看我們當初怎麼學大動，來推導尺06/12 07:02
53F→: 度分析06/12 07:02
54F→: https://youtu.be/vktPsVXhjDY06/12 07:02
55F→: 如果看不懂就直接看結論。06/12 07:02
56F→: 很簡單，06/12 07:02
57F→: 北半球你位移時，會有一個向右的假想力。06/12 07:03
58F→: 南半球你位移時，會有一個向左的假想力。06/12 07:03
59F→: 「方向」的部分，就是這樣兩句話結束。別多想了。06/12 07:03
60F→: 「量值」的部分06/12 07:03
61F→: 科式力=科式力常數X速度06/12 07:03
62F→: 其中，科式力是向量，速度也是向量。06/12 07:03
63F→: 「科式力常數」經過簡化後，代表項是-2*omega*sin(06/12 07:03
64F→: phi)06/12 07:03
65F→: 。06/12 07:03
66F→: omega叫作地球自轉速度。一天360度除86400秒。06/12 07:03
67F→: sin(phi)是一個0到1之間的值。06/12 07:04
68F→: 這個科式力常數，06/12 07:04
69F→: 在中緯度是10的-4次方每秒。06/12 07:04
70F→: 低緯度是10的-5次方每秒。都是非常小的數值。06/12 07:04
71F→: 為什麼要跟你強調「數值」？06/12 07:04
72F→: 因為你可以分辨哪些偽科學專家在胡說八道。06/12 07:04
73F→: 比如「馬桶的漩渦受到科式力在北半球逆時針旋轉」06/12 07:04
74F→: ，這就是標準的唬爛。馬桶尺度這麼小，科式力影響06/12 07:04
75F→: 可謂微乎其微。初始擾動才是造成馬桶旋渦方向的主06/12 07:04
76F→: 因。06/12 07:04
77F推: https://i.imgur.com/Rxr3T1a.jpg06/12 07:09
4F推: 你可以拍一張全頁嗎？這本是James R. Holton寫的？08/06 16:32
4F推: 第三題，是否在講行星遮蔽率？我那個年代每年高普07/02 19:02
5F→: 考必出，因為上劉振榮老師的課，他都會說，今年高07/02 19:03
6F→: 普考又是我出題啦。07/02 19:03
7F→: https://i.imgur.com/7T71vaQ.jpg07/02 19:03
8F推: 第二題，我個人猜想是二氧化碳溶於海洋，但是甲烷07/02 19:06
9F→: 不溶於水。所以二氧化碳濃度雖然是200倍，但效應沒07/02 19:06
10F→: 有甲烷來得高。07/02 19:06
11F推: 第三的部分，應該是行星［反照］率，不好意思用錯07/02 19:09
12F→: 詞彙07/02 19:09
6F推: 生存者偏差：猜對我就紅了，猜錯大家都會阿05/30 13:40
39F噓: 沾沾喜氣，我也要05/28 00:24
3F推: 我記得cwb現在用富士通的超級電腦，好像是第二次跟05/18 09:08
4F→: 富士通買了，之前ibm是第四台的樣子，現在第五台了05/18 09:08
14F噓: 看樣子要從氣概開始惹05/16 19:44
3F推: 推諺語。之前看李富城的追風，有提到古早農民沒受04/14 19:00
4F→: 教育，因此要用諺語這種歌謠來傳達氣象知識。04/14 19:00
5F→: 題外話，為什麼氣象主播要拿24節氣來說明啊，有點04/14 19:00
6F→: 莫名奇妙。那是黃河流域華北地區的東西，怎麼會套04/14 19:00
7F→: 用在華南的台灣上面。24節氣沒有颱風，台灣也沒有04/14 19:00
8F→: 大雪小雪啊。04/14 19:00