Quantum Physics | United States America (US)

Create: 2023-12-21 Update: 2024-05-17 03:18:02

❓چرا سرعت نور ثابت است؟

امواج مکانیکی مانند موجی که در طناب منتشر می‌شود یا مانند امواج صوتی یا امواج آب و ... همگی نیاز به محیطی برای انتشار دارند. برای نمونه، صوت بدون وجود مولکول های هوا توانایی منتشر شدن ندارد. همین موضوع باعث می‌شود تفاوتی میان ناظر ساکن نسبت به محیط انتشار موج و ناظر های دیگر وجود داشته باشد. ناظر ساکن نسبت به محیط انتشار، سرعت و معادله‌ای خاص برای موج و ناظران دیگر هرکدام سرعت‌ها و معادله‌های متفاوتی برای این امواج بدست می‌آورند. در واقع ناظران متحرک، خود را نسبت به محیط انتشار می‌سنجند و جملاتی را به معادلات خود اضافه می‌کنند.

اما موضوع در مورد امواج الکترومغناطیس فرق می‌کند. این امواج نیازی به بستری برای انتشار ندارند. این یعنی چارچوبی خاص برای مشاهده این گونه امواج، برخلاف امواج مکانیکی، وجود ندارد. بنابراین مرجعی (محیط انتشار موج) نیست که ناظران بتوانند خود را نسبت به آن بسنجند و تفاوتی را در سرعت نور احساس کنند. به همین دلیل سرعت نور برای تمامی ناظران (لَخت) ثابت است.

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Quantum Physics

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5.5K viewsMatin Abri, Dec 21, 2023 at 18:05

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❓چرا سرعت نور ثابت است؟

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