contoh kalimat john ambrose fleming

• Its operation was facilitated by the invention of the vacuum tube in 1904 by John Ambrose Fleming.
  Tabung vakum pertama diciptakan oleh John Ambrose Fleming pada tahun 1904.
• The key development of the vacuum tube by Sir John Ambrose Fleming in 1904 underpinned the development of modern electronics and radio broadcasting.
  Pengembangan tabung vakum oleh John Ambrose Fleming tahun 1904 menjadi kunci bagi barang elektronika dan penyiaran radio modern.