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Informasi<br />

untuk Anda<br />

Dalam pembahasan cahaya,<br />

biasanya satuan yang diterapkan<br />

adalah angstrom (Å), 1 Å = 10 –10 m.<br />

Panjang gelombang cahaya tampak<br />

berada pada rentang 4.000 Å<br />

sampai 7.500 Å.<br />

Information for You<br />

When referring to light, usually the<br />

length unit is using angstrom (Å),<br />

1 Å=10 –10 m. The visible light falls in<br />

the wavelength range 4.000 Å to<br />

7.500 Å.<br />

Sumber: Physics, 1980<br />

Tantangan<br />

untuk Anda<br />

Perhatikan Tabel 1.8. Buktikan<br />

bahwa satuan joule sama dengan<br />

kgm 2 /s 2 .<br />

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