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Korean Jay Kang
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You may have heard physicists describe the moon as being 1.3 light-seconds away, or the
ربما سمعتَ الفيزيائيين يصفون القمر بأنه يبعد 1.3 ثانية ضوئية عن الأرض
sun as 8 light-minutes away, and thought "what is this nonsense?
والشمسَ بأنها تبعد 8 دقائق ضوئية وقلتَ "ما هذا الهُراء،هل يقيسون المسافة
measuring distances with time?"
بالزمن؟!"
But actually, we measure distances using time almost every day.
في الواقع نحن نقيس المسافة بالزمن كل يوم تقريبًا،ماالمسافة بين منزلك
How far is it from your house to the store? About ten minutes. And how far is it from New York to Boston?
والمتجر؟ حوالي عشر دقائق ،ما المسافة بين نيويورك و بوسطن؟
About four hours. Los Angeles to Sydney?
أربع ساعات، ومن لوس أنجلس إل سيدني؟ 14 ساعة
14 hours. But of course, what we really mean is that the store is ten bike-minutes from your house,
لكن بالطبع ما نقصده هو أن المتجر يبعد عشر دقائق بالدراجة عن منزلك
New York is 4 car-hours from Boston, and Sydney is 14 plane-hours from LA.
نيويورك تبعد 4 ساعات بالسيارة عن بوسطن وسيدني 14 ساعة بالطائرة عن لوس أنجلس
In fact, using time to measure distances is so useful that I only know the distance from
في الواقع استخدام الوقت لوصف المسافة مفيد جدًا فأناأعرف المسافة من LA إلى سيدني
LA to Sydney in plane-hours, not miles or kilometers… though I suppose I could figure
بعدد ساعات الطيران فقط،ليس بالأميال أو الكيلومترات و أقدر على استنتاجها
it out by multiplying 14 plane-hours by the 550-miles-per-hour speed of a plane to get
بضرب 14 ساعة طيران في 550 ميل/ساعة وهي سرعة الطائرة ،والناتج حوالي 7500 ميل
roughly 7500 miles. But Sydney is also 5 sailboat-weeks from LA, 7 humpback-whale months from LA, 5 message-in-a-bottle
لكن سيدني تبعد 5 أسابيع إبحار عن LA و7 أشهر عن LA بسرعة الحوت الأحدب
years from LA, and 0.04 light-seconds from LA. On the other hand, the moon is 18 airplane-days away, 6 car-months away, and 15 whale-years away.
و 5 سنوات بسرعة رسالة في زجاجة،و 0.04 ثانية ضوئية عن LA بينما القمر يبعد 18 يوما بالطائرة ، و6 أشهر بالسيارة ،و15 عاما بسرعة الحوت عن الأرض، مما يعني في الحقيقة أن الحوت
Which means, in fact, that a whale might swim as far as the distance to the moon over the
قد يسبح المسافة إلى القمر طوال مدة حياته
course of its lifetime . And if that's not crazy enough, sometimes we even measure times in distance!
إن لم يكن ذلك غريبًا كفاية فاعلم أننا أحيانًا نقيس الزمن بالمسافة
How long is a movie? 8,000 feet – of film! And MinutePhysics? 30 meters.
كم طول الفيلم؟8000 قدم(من فيلم التصوير) ماذا عن MinutePhysics ؟ ثلاثون مترًا ..
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