फ्री वीडियो देखें Morse Code Flashing Light

(33.3 MB) 21 Feb 2017 को जोड़ा गया 148 बार खेला गया पढ़ाई लाइट सुरक्षा विज्ञान Tutorial
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Morse Code Flashing Light

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एनिमेशन का विवरण:

Video introduces the Morse characters L Q R Z F X Y as sent by flashing light by ships at sea, providing a number of drills to practice basic recognition.