Radiasi Benda Hitam Pengertian Radiasi Benda Hitam

Mudah dan Aktif Belajar Fisika untuk Kelas XII 176

A. Pengertian Radiasi Benda Hitam

1. Radiasi Benda Hitam

?52D6=2936=2;2B5:6=2C1D6?D2?8A2?42B2?2D2EB25:2C:=69 CE2DE 36?52 :C2=?I2 9E3E?82? 2?D2B2 32?I2?I2 6?6B8: I2?8 5:A2?42B2?52?CE9EI2?85::=::CE2DE36?52 ,642B2C656B92?2?52 52A2D 6=2E2? A6?822D2? 6=2=E: C63E29 68:2D2? I2?8 C6B:?8 5:=2E2? :C2=?I26D:2?5236B=29B282A252A28:92B:I2?846B29 ?52 22? 6B2C22? 252?I2 2=B I2?8 5:A2?42B2? =69 4292I2 2D292B:6DE3E9 6D:2?522CE652=2BE2?82?22?D6B2C2 329G2CE9EBE2?82?6?:?82D 2=D6BC63ED6?E?;E2?252?I22=B I2?85:A2?42B2?52B:DE3E9ED6B9252A=:?8E?82?56?82?42B2B25:2C: ?D9D6BC63ED63ED:2?329G236?5222?62?42B2? B25:2C:6=6DB28?6D:;:26:=::CE9ED:?88: +25:2C:6=6DB28?6D: I2?85:A2?42B2?=6936?525:C63ED+,-+ -29E29?522A2I2?85:2CE556?82?36?529:D2- ,.-.,,-1 -1+,.+,+1 -.,,--+,.- ,EA2I2?5252A2D=63:96292:D6?D2?8 36?529:D2A6B92D:2?8232B36B:ED 252265:A6B=:92D2?C63E29D2I2?8D6B3E2D52B:=82 I2?852A2D5:2?882AC63282:36?529:D2C6AEB?252?C2=29C2DEC:C:?I2 5:3E2D=E32?8 292I2I2?82CE6=2=E:=E32?85:A2?DE=2?D6BEC 6?6BEC=695:?5:?8D252?92A:B52A2D5:A2CD:2?D:52252=28: 4292I2I2?86=E2B ?:2BD:?I2=E32?8D6=2936B7E?8C:6?I6B2AC6E2 B25:2C: 2=B I2?8 252 +25:2C: 4292I2 I2?8 6=E2B 52B: 52=2 D2 9:D26=2=E:C63E29=E32?836B2C2=52B:C:=2DBC:=2DB92B?:I2?8 36B86D2B5:52=2D256?82?5EC86D2BD6BD6?DE D2DA252 5:?5:?8D222?6?I6B2A6?6B8:A2?2C52?36B86D2B D2D:?: 22?36B=2EC63282:C:=2DB92B?:I2?86?:3E=2?86=32?8 6=6DB28?6D: 6=32?8 6=6DB28?6D: I2?8 5:D:3E=2? =69 C:=2DB 22? 5:A2?DE=2? 36BE=2?8E=2?8 =69 5:?5:?8 D2 52? 636?DE86=32?836B5:B: 2C:= 6CA6B:6? 6?E?;E2? 329G2 :?D6?C:D2C B25:2C: D6B2= 36B32?5:?8=EBEC56?82?A2?82D6A2DCE9E36?52 ,62:?D:?88:CE9E C63E2936?52C62:?36C2BAE=26?6B8:2=BI2?85:A2?42B2? ,6=2:? :DE6?6B8:2=B52?:?D6?C:D2CB25:2C:D6B2=C2?82D36B82?DE?8A252 ?5:C:36?DE52?A6BE22?I2?85::=::36?52 6?EBED8+3 418233:?D6?C:D2CB25:2C:D6B2=CE2DE36?525:?I2D22?56?82? M Gambar 7.1 Cahaya yang masuk ke dalam kotak yang dianggap sebagai benda hitam sempurna, akan dipantulkan terus-menerus oleh dinding kotak. 19222516.04375 .7.3.8206031-7417416.0981290918.-3 Tes Kompetensi Awal :2?526?;6EB5E22:?32C29I2?836BG2B?2 9:D2 52? AED:9 5: 32G29 C:?2B 2D292B: 2:? 2?229I2?822?=63:946A2D6B:?86=2C2? 6?82A256::2? A2I2?85:2CE556?82?36?529:D2C6AEB?2 A229C6D:2A36?52C6=2=E62?42B2?6?6B8: A2I2?85:2CE55E2=:C686=32?8A2BD:6= A2I2?85:2CE56767D=:CDB:52?676AD? ,63ED2?;E82D9D9A6?6E2?86;2=2D6BC63ED DIUNDUH DARI: WWW.BUKUPAKET.COM Sumber buku bse.kemdikbud.go.id Radiasi Benda Hitam 177 ,63E2936?526:=::CE9EC636C2B L :2?CD2?D26:C:F:D2C36?52D6BC63ED D6?DE2?:?D6?C:D2CB25:2C:I2?85:A2?42B2? ; :6D29E: P M 6B52C2B2?6723?22?5:A6B=69 P M 25::?D6?C:D2CB25:2C:D6B2=I2?85:A2?42B2?36?52D6BC63ED252=29 0 2G2DCA:B2==2AEA:;2B6:=::=E2CA6BE22? 52?CE9E?I2 L :2?52:2?329G252B:6?6B8:=:CDB:I2?85:92?D2B2?A252=2AE5:B25:2C:2? 52=236?DE2=B52?2G2DA:;2B36BC:72DC6A6BD:36?529:D2 6B2A22A6B62BEC I2?86?82=:B52=2=2AEI2?85:9E3E?82?56?82?CDA?D236BD682?82? 282B=2AED6BC63ED52A2D36B7E?8C: 6D6B2?82? 6:C:F:D2C36?52E?DE36?529:D2C6AEB?2 CE9E ?CD2?D2,D672?=DJ2??P M =692B6?2:?D6?C:D2C252=296?6B8:I2?8I2?85:A2?42B2?D:2A C2DE2?G2DE52?D:2AC2DE2?=E2C22:?D6?C:D2CB25:2C:D6B2=52A2D ;E825:?I2D22?C63282:52I2A6BC2DE2?=E2C 52? M 6D6B2?82? :?D6?C:D2CB25:2C:D6B2=0 52I20 =E2CA6BE22?36?52 6?82?6?CE3CD:DEC:2?6723? 66723? 2252I2B25:2C:I2?85:A2?42B2?36?5222?6:=::A6BC222? M 252CE9EBE2?8C6:D2B LB25:2C:D6B2=I2?85:A2?42B2?36?52 D:5252A2DD6B=:92D=692D2 2?D6D2A:36?5236?52D6BC63EDA252 CE9E L 52A2D D6B=:92D 2= D6BC63ED 5:C63232? 36?5236?52 :DE 62?DE=2?4292I2 25:;:2?52:?8:?6?822D:B25:2C:D6B2= C2;2 92BEC 6?88E?22? 36?52 I2?8 D:52 62?DE=2? 4292I2 :C2=?I2 36?5236?52 I2?8 36BG2B?2 9:D2 6?52 9:D2 6?I6B2A C6=EBE9B25:2C:I2?852D2?86A252?I2 2=:?:52A2D?5222D:6D:2 C6C6B2?862?2C2?C632D2?836C: 252CE9E5:32G29 L36=E D2A2CA6DBEG2B?2I2?85:D:3E=2?52B:36C::DEC6D6=29CE9E 5:?2:2? 52? 36C: E=2: 632B2 22? E=2: D2A2 A6BE3292? CA6DBEG2B?236BC222?56?82?6?2:2?CE9E Contoh 7.1 Contoh 7.2 Dalam kehidupan sehari-hari tidak ada benda yang dapat menyerap seluruh radiasi yang mengenainya. Ingatlah Dalam SI, suhu menggunakan satuan derajat Kelvin. Ingatlah DIUNDUH DARI: WWW.BUKUPAKET.COM Sumber buku bse.kemdikbud.go.id Mudah dan Aktif Belajar Fisika untuk Kelas XII 178

2. Spektrum Radiasi Benda Hitam