physics chemistry maths science forums
become expert I help I sign up I login
refer a friend - earn nickels!!   
 advanced
 
Home
Ask & Discuss Questions
Study Material
Experts Zone
Hang Out!

Ask & Discuss Questions with Community & Experts

Moderation Team
 90 chars left    advanced
Ask iit jee aieee pet cbse icse state board community Community Discussion Question: GET SCREWED UP.READ ON
Forum Index -> Optics like the article? email it to a friend.  
Author Message
sinha0109 (88)

Cool goIITian

Olaaa!! Perrrfect answer. 16  [20 rates]

sinha0109's Avatar

total posts: 51    
offline Offline

HOW MUCH BRIGHTER IS THE SUNLIGHT THAN THE MOON LIGHT?THE ALBEDO(REFLECTIVITY)OF THE MOON IS 0.07

    
Mr.IITIAN007 (2985)

Blazing goIITian

Olaaa!! Perrrfect answer. 559  [654 rates]

Mr.IITIAN007's Avatar

total posts: 838    
offline Offline

Stars have no albedo, because they give off their own light, and albedo is a measure of reflected light. Even with such a low albedo of 0.07 the moon's rocks still reflect a lot more sunlight than does the adjacent empty space. The Earth is thus capturing a flux of:





1400 * 0.07 * (pi * R^2) / (2 * pi * d^2)



Or roughly:



1400 * (1 / 1400000)



In other words, moonlight is 1400000 times fainter than sunlight.


 


Did u appear for NUAA ???..this was the question der ..qu no 5 . ...I think I am right abt this . I never miss a question on albedo flux .


Ken
From: UNITED STATES, Green Bay, Wisconsin
 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
sinha0109 (88)

Cool goIITian

Olaaa!! Perrrfect answer. 16  [20 rates]

sinha0109's Avatar

total posts: 51    
offline Offline
IITIAN 2007 IHAVE JUST WORKED OUT THE ANSWER.IT COMES TO BE APPROXIMATELY(I USED A CLC.)1 MILLION TIMES SUN IS BRIGHTER THAN MOON.PLS CHECK THE DIFFERENCE OF 0.4 MILLION BCOZ IDONT HAVE THE SOLUTION
 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
Mr.IITIAN007 (2985)

Blazing goIITian

Olaaa!! Perrrfect answer. 559  [654 rates]

Mr.IITIAN007's Avatar

total posts: 838    
offline Offline
Yeah thats natural if use diifferent surface for flux consideration ..I have used w.r.t earth cuz I know the radius and mass of earth ..other data for other celestial objects ..I am not sure abt them .

Ken
From: UNITED STATES, Green Bay, Wisconsin
 this reply: 10 points  (with Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
You have to be logged on to rate
  
sinha0109 (88)

Cool goIITian

Olaaa!! Perrrfect answer. 16  [20 rates]

sinha0109's Avatar

total posts: 51    
offline Offline
good u r a genius man whats ur mail id
 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
Mr.IITIAN007 (2985)

Blazing goIITian

Olaaa!! Perrrfect answer. 559  [654 rates]

Mr.IITIAN007's Avatar

total posts: 838    
offline Offline
ken_hey56@yahoo.com

Ken
From: UNITED STATES, Green Bay, Wisconsin
 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
 
Forum Index -> Optics
Go to:   

Top Offers for goIITians
Correspondence Courses
Brilliant Tutorials
Narayana Institute
Aakash Institute
Classroom/Crash Courses
Narayana - Kota , Delhi , Others
Brilliant Tutorials - Class , Crash
Aakash Institute - Medical , Engg
Online Test Series
Brilliant Tutorials
Narayana Institute
Aakash Institute
Mahesh Tutorials
AMITY      Sri Chaitanya