Balloons, Airships, and Flying Machines
Gertrude BaconOne November night in the year 1782, so the story runs, two brothers sat over their winter fire in the little French town of Annonay, watching the grey smoke-wreaths from the hearth curl up the wide chimney. Their names were Stephen and Joseph Montgolfier, they were papermakers by trade, and were noted as possessing thoughtful minds and a deep interest in all scientific knowledge and new discovery. Before that night—a memorable night, as it was to prove—hundreds of millions of people had watched the rising smoke-wreaths of their fires without drawing any special inspiration from the fact; but on this particular occasion, as Stephen, the younger of the brothers, sat and gazed at the familiar sight, the question flashed across his mind, “What is the hidden power that makes those curling smoke-wreaths rise upwards, and could I not employ it to make other things rise also?”
Amazon 
Barnes & Noble 
Bookshop.org 
สามารถแปลงไฟล์ได้
ผลการค้นหาเพิ่มเติม
สิทธิประโยชน์อื่นๆ 
คำที่ถูกค้นหาบ่อยที่สุด
บุ๊กลิสต์ที่เกี่ยวข้อง
