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Alat Optik 2 kamera
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Alat Optik 2 kamera

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Transcript

  • 1. CAMERAS
  • 2. The dark cloth covering the photographer and the boxbody of the camera blocks out undesirable light, which might otherwise interfere with the picture
  • 3. PINHOLE
  • 4. A simple camera can be built by making a • pinhole in a box. Light passes through the hole and forms an inverted, backwards image of the subject on the back of thebox. The image will be somewhat dim, but the detail sharp enough that properly placed film will produce a good photograph. However, this kind ofphotography only works if the film receives .absolutely no other light
  • 5. A parts of CamerasLens• The lens is the eye of the camera. Its function is to bring light from the subject into focus on the filmFilmAperture• The lens diaphragm controls the size of the aperture, or lens opening, and thus the amount of light that passes through the lens.
  • 6. Bagan kamera diafragma Apertur Lensa Film x x x Gerak lensa
  • 7. The photographer, or an automatic • mechanism in some cameras, must adjust the distance between the lensand the film so that the plane of focus falls exactly where the film lies,making the resulting image appear in .focus
  • 8. EYE
  • 9. Bandingkan dengan bagan mata Retina x x x
  • 10. Persamaan antara mata dan kamera Mata Kamera • Lensa mata Lensa • • Iris Diafragma • • Pupil Aperture • • Retina Film •• Sifat bayangan Sifat bayangan •
  • 11. Perbedaan Kacamata dan Kamera mata Kamera Jarak bayangan • Jarak bayangan • tetap berubahUntuk menempatkan • Untuk menempatkan •bayangan agar jatuh bayangan agar jatuh di retina dilakukan di film dilakukan dengan mengubah dengan menggeser jarak fokus lensa lensa
  • 12. lup
  • 13. Bagaimana Lup digunakan• Alat untuk memperbesar bayangan• Bayangan yang terbentuk adalah maya• Benda diletakkan di ruang 1• Ada dua cara pengamatan dengan lup – Mata berakomodasi – Mata tidak berakomodasi
  • 14. microscope
  • 15. Bagaimana Mikroskop bekerja• Terdiri dari susunan dua buah lensa positif• Lensa obyektif memiliki fokus lebih kecil dibanding lensa okuler• Prinsip kerja mikroskop adalah membentuk bayangan nyata yang selalu diperbesar• Benda harus diletakkan di ruang 2 lensa obyektif
  • 16. Pembentukan bayanganX x x x x x x x x Fob O F ob Fok O Fok
  • 17. Pembentukan bayanganX x x x x x x x Fob O F ob Fok O
  • 18. Bagian-bagian mikroskop
  • 19. Pembentukan bayangan pada mikroskop:Ada dua cara pengamatan dengan mikroskop dengan mata tak berakomodasi. 1 – dengan mata berakomodasi. 2 –
  • 20. MIKROSKOP DENGAN MATA TAK BERAKOMODASIIo o o o o o o o2F F F 2F
  • 21. MATA BERAKOMODASIo o o o o o o o2F F F 2F
  • 22. TELESKOP (TEROPONG) Teropong bintangx x x x xF.Ob F.ok/F.ob F.ok
  • 23. Kegiatan Pengamatan dengan Teropong
  • 24. Teropong Bintang
  • 25. Teropong Binokuler
  • 26. PERISKOP (TEROPONG KAPAL SELAM)
  • 27. TELESKOP (TEROPONG) Teropong bumi (Yojana)x x x x x x x x x Pembalik Ok Ob