نُشر في بواسطة Abdulrahman Sumait

موسوعة الاختراعات ( 119 ) التلغراف اللاسلكي

التلغراف اللاسلكي

ولد العالم الفيزيائي وعالم الطبيعة الإيطالي غوليلمو ماركوني ( بالإنجليزية : Guglielmo Marconi )‏ ( 25 أبريل 1874 – 20 يوليو 1937 ) في مدينة بولونيا في إيطاليا.

وقد نفذت أول وصلة لاسلكية على يده.

وكان في حينها في الحادية والعشرين من عمره ، وقد نجح في الإرسال باللاسلكي لمسافة 2400 متر في عام 1895.

وفي 28 مارس عام 1899 حقق هذا العالم أول إرسال تلغرافي بين مدينتي دوفر ويميرو اللتين تبعدان عن بعضهما 50 كم.

تحتوي هذه الصورة على سمة alt فارغة; اسم الملف هو Screenshot_2020-04-08-thumb2-water-drops-texture-4k-black-background-water-drops-water-backgrounds-jpg-صورة-JPEG،-710×444-....png

ونجح كذلك في 12 كانون الأول عام 1901 بالتعاون مع الإنجليزي
” جون أمبروز فلمنج ( بالإنجليزية : John Ambrose Fleming ) ( 29 نوفمبر 1849 – 18 أبريل 1945 ) ” في تحقيق أول إرسال باللاسلكي عبر الأطلنطي بين مونواى في الجنوب الغربي في إنجلترا وبين نيوزيلنده على بُعد 34000 كم.

تحتوي هذه الصورة على سمة alt فارغة; اسم الملف هو Screenshot_2020-04-08-thumb2-water-drops-texture-4k-black-background-water-drops-water-backgrounds-jpg-صورة-JPEG،-710×444-....png

وفي 26 تشرين الثاني 1898 أنجز الفرنسي ” يوجين دو كراتيه ” ( 1844 – 1915 ) ومعه شريكه ” أرنست روجيه ” أول وصلة لا سلكية في باريس بين برج إيفل والبانثيون على بُعد 4 كلم.

تحتوي هذه الصورة على سمة alt فارغة; اسم الملف هو Screenshot_2020-04-08-thumb2-water-drops-texture-4k-black-background-water-drops-water-backgrounds-jpg-صورة-JPEG،-710×444-....png

المراجع :

تحتوي هذه الصورة على سمة alt فارغة; اسم الملف هو Screenshot_2020-04-08-thumb2-water-drops-texture-4k-black-background-water-drops-water-backgrounds-jpg-صورة-JPEG،-710×444-....png
تحتوي هذه الصورة على سمة alt فارغة; اسم الملف هو Screenshot_2020-04-08-thumb2-water-drops-texture-4k-black-background-water-drops-water-backgrounds-jpg-صورة-JPEG،-710×444-....png

جزيرة الأمل || Hope island

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