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Presentasi Proposal Teropong Bintang

Presentasi Proposal Teropong Bintang. Presented By. Haning Hendrati ( 16 ) Winda Priani ( 31 ) Yossita Herdiana ( 32 ) Yovvita Herdiana ( 33 ) Zulfa Nur Zaeni ( 34 ) X.RSBI.07. Alat dan Bahan. Lensa okuler dan lensa obyektif Tempat suttle kock

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Presentasi Proposal Teropong Bintang

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  1. Presentasi Proposal TeropongBintang

  2. Presented By • HaningHendrati ( 16 ) • WindaPriani ( 31 ) • YossitaHerdiana ( 32 ) • YovvitaHerdiana ( 33 ) • ZulfaNurZaeni ( 34 ) X.RSBI.07

  3. AlatdanBahan • Lensaokulerdanlensaobyektif • Tempatsuttlekock • 3 kayupenyangga ( @ 60 cm ) • Paku • Palu • Kardus • Beberapabalokkayu

  4. Keterangan Lain • Diameter lensakecil = 2.5 cm • Diameter lensadatar = 5 cm • Lensadatar = S : 70 cm , S’ : 98 cm = 1/f = 1/S + 1/S’ = 1/70 + 1/98 = 7 + 5 = 12 = 4,8 490 490 • Lensakecil = S : 20 cm , S’ : 7.5 cm = 1/f = 1/S + 1/S’ = =1/20 + 1/7.5 = 7.5 + 20 = 27.5 = 5.4 150 150

  5. d = fob + fok • Panjangteropongadalahjumlahfokuslensaobyektifdenganfokuslensaokuler : • Jadidengan data tersebutkitadapatmenentukanpanjangteropongdanmana yang merupakanlensaokulernya. • Panjangteropong = fob + fok = 4.8 + 5.4 = 10.2 cm / 25 cm • Lensaokulerdenganfokus = 5.4 cm

  6. Cara Membuat • Pasangkan 3 buahkayu ( 60 cm ) kebalokkayu , yang berfungsisebagaipenyanggateropong. • Pasang 2 buahbalokpadabagianatasbalok yang digunakansebagaipenyangga. • Buatbalokpengungkituntuktempatteropongdankertaskartonuntuktempatmemasangteropong. • Lapisitempatsuttlekockdengankertaskarton • Buatkertaskartonberbentuksepertitempatkocknamundenganukuranlebihkecil. • Pasanglensadikeduaujungteropong. Lensaokulerdipasangpadabagiantabungkecil , sedangkanlensaobyektifnyadipasangdiujungtabungbesar.

  7. terimakasih

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