Dürer & 測距儀2022d142 教科書風 e048 肩幅への光

2022zionad @2022zionad

ブラッドリー先輩の　この部屋は 宇宙内を進む　この１つの光線に対し 水平方向に　移動している設定だった

2022zionad @2022zionad

In Bradley's room, The setting was that it is moving horizontally with respect to the single ray advancing through the universe.

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地球表面の建物 この部屋での 地球自転での コリオリの力　相当のことは 計測の誤差検出以下なので　捨象してる と　俺は推察する

2022zionad @2022zionad

Buildings on the Earth's surface, In this room, Considering the Coriolis force due to the Earth's rotation, I speculate that it is neglected as it falls below the error detection of measurement.

2022zionad @2022zionad

地球が ブラッドリー先輩が　注目した この光線軌跡　鉛直方向に対し この部屋建物が　水平方向に動いているから 望遠鏡を　斜めにしないと 光線先端が　望遠鏡の筒（つつ）に ぶつかって　しまった

2022zionad @2022zionad

The Earth, Regarding the light ray trajectory that Bradley focused on, In the vertical direction, Since the buildings in this room are moving horizontally, Unless the telescope is tilted, the tip of the light ray would collide with the telescope's tube.

2022zionad @2022zionad

ブラッドリー先輩は 望遠鏡を　斜めに設置して対処したが 地球を　水平方向に　動かないように 頭の中で　超理想状態を　設定しよう

2022zionad @2022zionad

Bradley tilted the telescope to address the issue, but within your mind, you envisioned an ultra-idealized state where the Earth doesn't move horizontally.

2022zionad @2022zionad

だから　光線は　真っ直ぐ鉛直方向　真下に 望遠鏡の　筒（つつ）を通過できる この超理想状態で リアル思考実験を　行う

2022zionad @2022zionad

So, the light rays can pass straight down vertically through the telescope's tube in this ultra-idealized state. In this ultra-idealized state, conduct a real thought experiment.

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やりたいことは　これ

2022zionad @2022zionad

What I want to do is this. DeepL

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pic.twitter.com/HxSSVJ3ljX

拡大

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pic.twitter.com/WDu5qvqHrp

拡大

2022zionad @2022zionad

ミンコフスキー　時空図 空間軸　２ 時間軸　１ この過去光円錐　底面に ブラッドリー先輩の　部屋 断面図を　貼る

2022zionad @2022zionad

Minkowski spacetime diagram: Spatial axes: 2 Temporal axis: 1 On the base of the past light cone, Overlay a cross-section diagram of Bradley's room.

2022zionad @2022zionad

５？階建て　ぐらいの 建物断面図を　 過去光円錐　底面に描くには 半径30 cm の過去度合い 底面じゃ ハミ出てしまう

2022zionad @2022zionad

To draw a cross-section diagram of a building, approximately 5? stories high, on the base of the past light cone, With a radius of 30 cm for the degree of the past on the base, it may protrude beyond.

2022zionad @2022zionad

だから 半径30 メートルの過去度合い 底面 用意すれば ブラッドリー先輩の　実験空間を すっぽり　入れて　描ける

2022zionad @2022zionad

So, If you prepare a base with a radius of 30 meters for the degree of the past, You can encompass Bradley's experimental space and draw it completely.

2022zionad @2022zionad

半径 30万km メートルの過去度合い 底面 用意すれば 過去光円錐 底面円周からの情報が 円周の中心に １秒後に　届く

2022zionad @2022zionad

If you prepare a base with a radius of 300,000 kilometers for the degree of the past, Information from the base circumference of the past light cone arrives at the center of the circumference one second later.

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pic.twitter.com/Bg5Kjc9l66

拡大

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pic.twitter.com/vzrDW8WVQA

拡大

2022zionad @2022zionad

それでは　この意味を 数直線に　戻って 解説に入ろう