can a normal lamp mimic the sun for this ?

i want to make a plate/bowl with mirors that reflect the light to a certain point.if i put the ceiling lamp on and use that light to aim all the mirrors to one point. wil it work in the sun too ?

Comments

[mpilchfamily]

Indoor lighting isn't intense enough to be a good means of focusing an aperture intended to focus sun light to a specific point. Save your focusing for when you get it into the sun.

[Kiteman]

+1

Plus, the difference in distance (10 feet vs 93,000,000 miles) means that the point at which the light is focused will change when you change light sources.

[rabarbarbaar!]

tnx for your answers.

here is my problem now:
i want enough mirrors (small ones) focused on one point so i can create fire,

but the distance between the sun and earth changes constantly, so technically i would focus them and only 2 times a year it will be focused ?

or is the distance of the sun too little to make a difference ?

[Kiteman]

The differences in the Earth-Sun distance are tiny compared to the total distance - the Sun is, effectively, a light-source at infinite distance.

(The shape you're after with your mirrors is a parabola.)

[rabarbarbaar!]

tnx so i just have to be patient.