K2-18b｜科學家以99.7%信心確認太陽系外行星其存在生命 距離地球124光年
咪奇老味
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太陽系入面 木衞二 同 土衞六 有可能有
讓我用相對論公式計算一下。
要計算加速到接近光速所需嘅能量,我哋要用Einstein嘅相對論質能方程式 E = mc²γ
其中 γ = 1/√(1-v²/c²) 係Lorentz因子
假設一架重100,000噸嘅太空船加速到0.9c (光速嘅90%):
1. 首先計算 γ:
γ = 1/√(1-0.9²) = 2.294
2. 計算所需能量:
E = mc²(γ-1)
= (100,000,000 kg)(3x10⁸ m/s)²(1.294)
≈ 1.16 x 10²⁴ 焦耳
呢個能量相當於地球每年接收到太陽能量嘅約2.5倍。
要你明白有幾大:
- 係全球每年用電量嘅約50倍
- 可以俾全個人類文明用成百年
我可以詳細解釋相對論效應同埋點解需要咁大能量,如果你有興趣。
要計算加速到接近光速所需嘅能量,我哋要用Einstein嘅相對論質能方程式 E = mc²γ
其中 γ = 1/√(1-v²/c²) 係Lorentz因子
假設一架重100,000噸嘅太空船加速到0.9c (光速嘅90%):
1. 首先計算 γ:
γ = 1/√(1-0.9²) = 2.294
2. 計算所需能量:
E = mc²(γ-1)
= (100,000,000 kg)(3x10⁸ m/s)²(1.294)
≈ 1.16 x 10²⁴ 焦耳
呢個能量相當於地球每年接收到太陽能量嘅約2.5倍。
要你明白有幾大:
- 係全球每年用電量嘅約50倍
- 可以俾全個人類文明用成百年
我可以詳細解釋相對論效應同埋點解需要咁大能量,如果你有興趣。
以現在嘅科技，冇任何接近小小嘅方法
係宇宙點減速？
係咪用返相方法同能量減速？
係咪用返相方法同能量減速？
你講既神欠缺 "可證偽性"
"神係存在, 神係無形" 點樣disprove?
科學講究證據, 可反覆驗證
你可以重覆佢實驗, 度個行星嘅光譜, 驗證返係咪有相關物質, 以此推論佢哋嘅學說是否正確
科學同迷信分別在此
我唔會話無神, 因為驗證不能
但我會話你迷信撚, 人哋話有神你又信?
"神係存在, 神係無形" 點樣disprove?
科學講究證據, 可反覆驗證
你可以重覆佢實驗, 度個行星嘅光譜, 驗證返係咪有相關物質, 以此推論佢哋嘅學說是否正確
科學同迷信分別在此
我唔會話無神, 因為驗證不能
但我會話你迷信撚, 人哋話有神你又信?
你咁鐘意攞自己嗰套科學嚟講神
咁我咪又攞返聖經出嚟講囉
到最後你咪又係證明唔到
我本聖經就證明到啦
咁我咪又攞返聖經出嚟講囉
到最後你咪又係證明唔到
我本聖經就證明到啦
真呀 師兄 復活節 我哋一定畀面你
即係我地喺地球望隻太空船 即使佢接近光速
要百幾年 但船入面既人只係過咗年半?
文科生唔識
要百幾年 但船入面既人只係過咗年半?
文科生唔識
算好近
我講緊直徑啊
係
佢來回返到地球就會所有識佢既人都死晒
但實際船入面既人其實係唔會過左好耐
所以其實係唔需要幾代人係入面
佢來回返到地球就會所有識佢既人都死晒
但實際船入面既人其實係唔會過左好耐
所以其實係唔需要幾代人係入面
文革死二千萬人，猶太人死六百萬，已經証明世界無神
點解你認為有神就唔會死人？
死可以係一個救贖，亦係審判
所以嘢都係神嘅安排
死可以係一個救贖，亦係審判
所以嘢都係神嘅安排
This is only a partial explanation.
The calculus for distance is something different. The path is a curved line in a 4D space. At a faster Lorentz speed, the spaceship will travel on another curved trajectory than for a slower speed. This new path will be shorter than the first one. Fr faster speeds will be shorter paths than for lower speeds but these paths can be represented in a 4D space.
A 3D example. You can imagine an airplane traveling between two cities on Earth ( Los Angeles and Tokyo) At slower speeds will travel near the Equator on a longer path than at a faster speed. At faster speeds the airplane will travel near the North Pole where the route is curved also, but shorter than the first one. Of course, on Earth, the airplane will travel on the shortest routes, no matter its speed. This example is to image curved paths.
(copied from someone on Quora)
See https://physics.bu.edu/~duffy/ns547_spring10_notes03/length_contraction.html
The calculus for distance is something different. The path is a curved line in a 4D space. At a faster Lorentz speed, the spaceship will travel on another curved trajectory than for a slower speed. This new path will be shorter than the first one. Fr faster speeds will be shorter paths than for lower speeds but these paths can be represented in a 4D space.
A 3D example. You can imagine an airplane traveling between two cities on Earth ( Los Angeles and Tokyo) At slower speeds will travel near the Equator on a longer path than at a faster speed. At faster speeds the airplane will travel near the North Pole where the route is curved also, but shorter than the first one. Of course, on Earth, the airplane will travel on the shortest routes, no matter its speed. This example is to image curved paths.
(copied from someone on Quora)
See https://physics.bu.edu/~duffy/ns547_spring10_notes03/length_contraction.html
發明引力彈弓
乜你唔知耶蘇就係外星人咩
飛雷神
想食外星菜
如果係地球都可以觀測到外地有生命
咁以宇宙嘅尺度嚟睇，存在比地球人更高級文明概率會變得非常高
咁以宇宙嘅尺度嚟睇，存在比地球人更高級文明概率會變得非常高
有生命（單細胞生物）唔出奇，但一路進化成為智慧生物個機率就真係好低
如果神係被你哋稱為嘅外星人，咁呢個世界就唔會再有其他外星人
因為神係唯一的，而且自有永有
因為神係唯一的，而且自有永有
其實點解人類仲要以地球角度去睇外星生命證明？即係地球生物要既野唔代表宇宙其他生命體要
考慮埋時間膨脹, 太空船入面實際過既時間會少好多
Grok 3話人類最快嘅探測器要306萬年
