هل يمكن للماء أن يغلي دون تسخين؟
يغلي الماء عند 100 درجة مئوية في الظروف العادية، لكن خفض الضغط يخفض درجة غليانه، وقد يغلي عند 20 درجة مئوية. فكلما انخفض الضغط، انخفضت درجة الحرارة اللازمة للغليان.
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Security and sustainability in space must go hand in hand, envoy says at event in Riyadh
Security and sustainability in space must go hand in hand, envoy says at event in Riyadh
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Super El Nino could make 2026 record hottest year
After a record-breaking August, the world experienced its second hottest September ever observed, with surface air temperatures averaging 16.27C.
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Saudi space regulator calls for global cooperation as space economy heads toward $1.8tn
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