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Gelombang
• Terhasil daripada getaran
• Bergerak dalam keadaan lurus
• Boleh dipantulkan dan dibiaskan
• Contoh :
- haba, cahaya, bunyi dan arus
elektrik
Spektrum elektromagnet
Gelombang elektromagnetik
• Terhasil melalui ayunan cas elektrik dalam
ruang magnet
• Boleh melepasi ruang vakum
• Bergerak pada kelajuan cahaya
• Gelombang radio : gelombang paling panjang
dan rendah frequensi
GELOMBANG RADIO
CIRI-CIRI GELOMBANG RADIO
• Boleh bergerak pada kelajuan cahaya
• Boleh bergerak dalam vakum
• Tidak mudah dihalang oleh gangguan seperti
bukit, gunung atau diserap oleh atmosfera
• Boleh dipantulkan, dibiaskan
• Digunakan bagi tujuan : telekomunikasi, radar,
navigasi, komunikasi angkasa
Gelombang
Gelombang
Gelombang
Gelombang
Gelombang
Gelombang
Gelombang
Gelombang

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Gelombang

  • 1. Gelombang • Terhasil daripada getaran • Bergerak dalam keadaan lurus • Boleh dipantulkan dan dibiaskan • Contoh : - haba, cahaya, bunyi dan arus elektrik
  • 2.
  • 3.
  • 5. Gelombang elektromagnetik • Terhasil melalui ayunan cas elektrik dalam ruang magnet • Boleh melepasi ruang vakum • Bergerak pada kelajuan cahaya • Gelombang radio : gelombang paling panjang dan rendah frequensi
  • 7. CIRI-CIRI GELOMBANG RADIO • Boleh bergerak pada kelajuan cahaya • Boleh bergerak dalam vakum • Tidak mudah dihalang oleh gangguan seperti bukit, gunung atau diserap oleh atmosfera • Boleh dipantulkan, dibiaskan • Digunakan bagi tujuan : telekomunikasi, radar, navigasi, komunikasi angkasa