https://en.wikipedia.org/wiki/Wheeler%27s_delayed-choice_experiment
其實有興趣不如睇吓Wiki都好過睇啲content farm 睇壞腦
恐怖物理實驗 - 雙狹縫實驗
老老尻
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6 Like
97 Dislike
但佢講到1999年係experimentally咁做出嚟，所以我想知係咩paper
其實我無睇條片，佢講咗咩?
Double-slits in lab and cosmos[edit]
Replace beam splitter by registering projected telescope images on a common detection screen.
Wheeler's version of the double-slit experiment is arranged so that the same photon that emerges from two slits can be detected in two ways. The first way lets the two paths come together, lets the two copies of the wavefunction overlap, and shows interference. The second way moves farther away from the photon source to a position where the distance between the two copies of the wavefunction is too great to show interference effects. The technical problem in the laboratory is how to insert a detector screen at a point appropriate to observe interference effects or to remove that screen to reveal the photon detectors that can be restricted to receiving photons from the narrow regions of space where the slits are found. One way to accomplish that task would be to use the recently developed electrically switchable mirrors and simply change directions of the two paths from the slits by switching a mirror on or off. As of early 2014 no such experiment has been announced.
The cosmic experiment described by Wheeler has other problems, but directing wavefunction copies to one place or another long after the photon involved has presumably "decided" whether to be a wave or a particle requires no great speed at all. One has about a billion years to get the job done.
The cosmic version of the interferometer experiment could easily be adapted to function as a cosmic double-slit device as indicated in the illustration. Wheeler appears not to have considered this possibility. It has, however, been discussed by other writers.[19]
Double-slits in lab and cosmos[edit]
Replace beam splitter by registering projected telescope images on a common detection screen.
Wheeler's version of the double-slit experiment is arranged so that the same photon that emerges from two slits can be detected in two ways. The first way lets the two paths come together, lets the two copies of the wavefunction overlap, and shows interference. The second way moves farther away from the photon source to a position where the distance between the two copies of the wavefunction is too great to show interference effects. The technical problem in the laboratory is how to insert a detector screen at a point appropriate to observe interference effects or to remove that screen to reveal the photon detectors that can be restricted to receiving photons from the narrow regions of space where the slits are found. One way to accomplish that task would be to use the recently developed electrically switchable mirrors and simply change directions of the two paths from the slits by switching a mirror on or off. As of early 2014 no such experiment has been announced.
The cosmic experiment described by Wheeler has other problems, but directing wavefunction copies to one place or another long after the photon involved has presumably "decided" whether to be a wave or a particle requires no great speed at all. One has about a billion years to get the job done.
The cosmic version of the interferometer experiment could easily be adapted to function as a cosmic double-slit device as indicated in the illustration. Wheeler appears not to have considered this possibility. It has, however, been discussed by other writers.[19]
我都覺得條片講嘅實驗技術上唔可太可行，不過都期待未來有人做到出嚟
有冇實際實驗既片？
揾極都係模擬動畫黎
揾極都係模擬動畫黎
is just a physical model 
你解唔解釋到F=ma係點解？
你解唔解釋到F=ma係點黎？強烈要求學術台神秘台分翻開事實上目前嘅量子物理學係解釋唔到啲現象點嚟，只係能夠做到「描述」同「推測」，人類對量子現象嘅理解真係好皮毛，所以啲人將呢啲連繫到神秘論都係好正常。
而家quantum physics都講到神神化化，唔知做乜
呢part好make sense唔算恐怖
entanglement同quantum eraser個part先恐怖
聽完覺得真係有平行宇宙存在
entanglement同quantum eraser個part先恐怖
聽完覺得真係有平行宇宙存在
Heisenberg's uncertainty principle係講緊physical world嘅foundamental uncertainty
唔關Observer Effect事
唔關Observer Effect事
冇解釋唔到，其實物理解釋唔到任何嘢
愛恩斯坦：Spooky action at a distance
唔係經典力學嚟咩？
放心
愛因斯坦都唔明
愛因斯坦都唔明
中學學個陣唔係做實驗
得出一串數字
畫落圖表證明佢地係線性函數關係咩
咁樣算唔算proof咗
得出一串數字
畫落圖表證明佢地係線性函數關係咩
咁樣算唔算proof咗
但無「解釋」到
fundamental laws of nature就係一d無得解既野
當然，F=ma其實可以由quantum mechanics得出黎，所以可以話有解釋，但QM出現之前F=ma就係一個fundamental law of nature，係無得解既野
可能有一日我地會發現量子現象背後會有個更fundamental既原因，到時我地咪可以話呢d量子現象有解釋囉
但以目前所知，量子現象就係一d fundamental laws of nature，無得解
fundamental laws of nature就係一d無得解既野
當然，F=ma其實可以由quantum mechanics得出黎，所以可以話有解釋，但QM出現之前F=ma就係一個fundamental law of nature，係無得解既野
可能有一日我地會發現量子現象背後會有個更fundamental既原因，到時我地咪可以話呢d量子現象有解釋囉
但以目前所知，量子現象就係一d fundamental laws of nature，無得解
又或者你可以試下重新定義「觀察」
會唔會有腦電波可以形成「觀察」
會唔會有腦電波可以形成「觀察」
有無諗過「諗下」已經可以形成「觀察」？
只係普通人解讀唔到反射既腦電波？
只係普通人解讀唔到反射既腦電波？
有無方法去加強人類發出既腦電波？
例如長時間訓練？
又有無可能憑意識操控？
人類既神經網絡
又有無可能經長時間訓練達至加強同可控制？
我乜都唔識9up下
例如長時間訓練？
又有無可能憑意識操控？
人類既神經網絡
又有無可能經長時間訓練達至加強同可控制？
我乜都唔識9up下
如果真係有平行宇宙
咁我哋嘅命運一定係一早已經定咗
自己諗下點解
咁我哋嘅命運一定係一早已經定咗
自己諗下點解
其實我唔明點解佢唔出果篇研究嘅出處
我有興趣研究下
我有興趣研究下
睇到個標題嚇到叫左出黎，老細問咩事，我照讀比佢聽，讀左標題內文都未開始讀，佢成塊面白哂，自言自語，猛咁話「共慘黨殺到黎，香港九龍新界無得避，要化身玉皇大帝打救蒼生；共慘黨殺到黎，香港九龍新界無得避，要化身玉皇大帝打救蒼生……」
跟住衝左上天台，叫左一聲「鳴呀，點解係我」就跳左落去，成班同事追上去都追唔切，有兩個女同事嚇到暈左，仲有個男同事當場嚇到變左弱智，不停問人要唔要食腸仔蛋。
我就好好彩無咩事，但同班同事五十幾個人即時變左失業，你條仆街真係害人害物……
跟住衝左上天台，叫左一聲「鳴呀，點解係我」就跳左落去，成班同事追上去都追唔切，有兩個女同事嚇到暈左，仲有個男同事當場嚇到變左弱智，不停問人要唔要食腸仔蛋。
我就好好彩無咩事，但同班同事五十幾個人即時變左失業，你條仆街真係害人害物……
片尾個實驗嘅paper
doi：10.4006/0836-1398-25.2.157
doi：10.4006/0836-1398-25.2.157