Aragti fog iyo aragti fog - dhibaatooyinka iyo xalalka
1. Ilmaha wax maqla ee n wax maqla wuxuu buug ka akhrin karaa meel u dhow 1 mitir. Si uu wax ugu akhriyo masaafada akhriska caadiga ah ee 25 cm, go'aami awoodda muraayadda waa in ilmuhu isticmaalo.
Xalka:
Ilmuhu wuxuu la ildaran yahay indho fog , halkaas oo meesha u dhow indhihiisu ay tahay 1 mitir ama 100 cm. Barta u dhow isha caadiga ah waa 25 cm. Isha waxaa lagu caadiyeyn karaa muraayad qaloocan.
La yaqaan:
Barta u dhow = masaafada sawirka (s') = -100 cm
Hoosku waa inuu hor yaallaa muraayadda qaloocan si loo arko. Maadaama hoosku uu hor yaal muraayadda qaloocan markaa sawirku waa mid casri ah oo calaamadaysan.
Masaafada akhriska caadiga ah = masaafada shayga (yada) = 25 cm
rabay : awoodda muraayadda
Xalka:
Dhererka diiradda ee muraayadda qaloocan (f):
1/f = 1/s + 1/s' = 1/25 – 1/100 = 4/100 – 1/100 = 3/100
f = 100/3 cm
f = (100/3: 100) m
f = (100/3 x 1/100) m
f = 1/3 m
Awoodda muraayadda qaloocan (P):
P = 1 /f = 1: 1/3 = 1 x 3/1 = 3 Diopters.
Awoodda muraayadda convex waa 3 diopters.
2.
Iyada oo ku saleysan sawirka kore, go'aami ehaa cilladt loo isticmaalay in lagu caadiyeeyo isha.
Solution
Cilladaha indhaha: aragti fog
TIftiinka iftiinka waxaa si sax ah loogu eegi karaa retina marka muraayad qaloocan la dhigo horta isha. Muraayadaha kala duwan ka caawi faafinta iftiinka si uu si sax ah diiradda ugu saaro retina.
3. Qofku wuxuu wax ku akhrin karaa masaafada ugu dhow ee 50 cm. Si uu wax ugu akhriyo masaafada 30 cm, go'aami awoodda muraayadaha indhaha muraayadaha indhaha
Xalka:
Qofka ayaa ka cabanaya aragti dhawMuraayadaha loo isticmaalo in lagu caadiyeeyo indhaha aan aragga lahayn waa muraayadaha wareegsan ama muraayadaha isku dhafan ama muraayadaha togan.
Si shayga la arkay uu u ahaado 30 cm horteeda isha, muraayaddu waa inay sawir ka sameysaa masaafo dhan 50 cm horteeda isha. Sawirku wuxuu hor yaallaa muraayadda si sawirku u noqdo mid toosan oo casri ah.
La yaqaan:
Masaafada shayga (s) = 30 cm
Masaafada sawirka (s') = -50 cm (taban sababtoo ah dalwad)
La doonayo: Awoodda muraayadda (P)
Xalka:
Dhererka diiradda:
1/f = 1/s + 1/s'
1/f = 1/30 + 1/-50
1/f = 5/150 – 3/150
1/f = 2/150
f = 150/2 = 75 cm = 0.75 mitir = 75/100 mitirs
Dhererka diiradda la saaray ee togan macnaheedu waa muraayadda la isticmaalay waa muraayad wareegsan.
Awoodda muraayadda:
P = 1/f
P = 1: 75/100 = 1 x 100/75
P = 100/75
P = 4/3 Diopters-ka
