# Two light sources against a wall

• menco
In summary, having two light sources against a wall can result in a more evenly distributed and vibrant appearance compared to one light source. The distance and angle of the light sources can vary depending on the size of the wall and desired lighting effect. Two different color light sources can also be used for a unique and dramatic effect, but it is important to consider how the colors will complement each other and the overall ambiance of the room. LED lights, halogen, and fluorescent lights are all recommended options for lighting a wall, with the temperature and brightness of the light sources being important factors to consider. By adjusting the position, angle, and intensity of the light sources, different lighting effects can be achieved on the wall, from soft and diffused to bold
menco

## Homework Statement

Two light sources half a millimetre apart with a wavelength of 550nm shine on a wall exactly 50cm away. What is the distance between the centre point on the wall and the 10th bright spot out?

x=nLv/d

## The Attempt at a Solution

x=10x0.5x(5.5x10^-7)/0.0005
= 0.0055m = 5.5mm

I agree with that answer. The assumption that the angle is sufficiently small so that nλ = d*sin(θ) equals dx/L appears to be reasonable. Working it out with the exact nλ = d*sin(θ) yields x = 5.5003 mm.

## 1. How do two light sources affect the appearance of a wall?

Having two light sources against a wall can create a more evenly distributed and brighter lighting compared to only one light source. This can result in a more vibrant and dynamic appearance of the wall.

## 2. Is there a specific distance or angle that is ideal for placing two light sources against a wall?

The distance and angle of the light sources depends on the size of the wall and the desired lighting effect. Generally, placing the light sources at equal distances on either side of the wall and at a 30-45 degree angle can provide a balanced and flattering lighting.

## 3. Can two different color light sources be used against a wall?

Yes, using two different color light sources can create a unique and dramatic effect on the wall. However, it is important to consider how the colors will complement each other and the overall ambiance of the room.

## 4. What type of light sources are recommended for lighting a wall?

LED lights are a popular choice for lighting a wall due to their energy efficiency and versatility. Halogen and fluorescent lights can also be used for a brighter and more intense lighting effect. It is important to consider the temperature and brightness of the light sources for the desired effect.

## 5. How can two light sources be adjusted to create different lighting effects on a wall?

The position, angle, and intensity of the light sources can be adjusted to create different lighting effects on a wall. Experimenting with these factors can help achieve the desired lighting effect, whether it's a soft and diffused look or a bold and dramatic one.

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