Increase Visible Light from Incandescent Bulbs: Benefits & Challenges

  • Thread starter Thread starter neelakash
  • Start date Start date
  • Tags Tags
    Bulb
AI Thread Summary
Increasing the visible light output from incandescent bulbs primarily involves raising their operating temperature to shift the black-body radiation spectrum into the visible range. However, this approach can lead to reduced efficiency and increased heat production. Alternatives like fluorescent lamps generate light without relying on black-body radiation, offering higher visible light output. Despite these options, traditional incandescent bulbs remain popular due to their warm light quality and simplicity. The discussion highlights the trade-offs between light quality and energy efficiency in lighting technology.
neelakash
Messages
491
Reaction score
1
As we know the incandescent bulbs emit mostly heat and very small amount of visible light.Is there any way to increase the proportion of the visible light? If there is why is it not employed?

Can anyone help me to start with it?
 
Physics news on Phys.org
The only way to increase the output of an incandescent lamp is to increase the temperature, to move the peak of the black-body spectrum into the visible range.

Or -- you can use a lamp that doesn't use black-body radiation to generate light (like fluorescents, as stewartcs linked).
 
Best answer so far russ_watters

Thank you.
 

Thread 'The Effect of Linear and Rotational Motion on Measured Weight'

Consider an extremely long and perfectly calibrated scale. A car with a mass of 1000 kg is placed on it, and the scale registers this weight accurately. Now, suppose the car begins to move, reaching very high speeds. Neglecting air resistance and rolling friction, if the car attains, for example, a velocity of 500 km/h, will the scale still indicate a weight corresponding to 1000 kg, or will the measured value decrease as a result of the motion? In a second scenario, imagine a person with a...
View full post »

Thread 'Coulomb gauge implies instantaneous radial electric field?'

Scalar and vector potentials in Coulomb gauge Assume Coulomb gauge so that $$\nabla \cdot \mathbf{A}=0.\tag{1}$$ The scalar potential ##\phi## is described by Poisson's equation $$\nabla^2 \phi = -\frac{\rho}{\varepsilon_0}\tag{2}$$ which has the instantaneous general solution given by $$\phi(\mathbf{r},t)=\frac{1}{4\pi\varepsilon_0}\int \frac{\rho(\mathbf{r}',t)}{|\mathbf{r}-\mathbf{r}'|}d^3r'.\tag{3}$$ In Coulomb gauge the vector potential ##\mathbf{A}## is given by...
View full post »

Thread 'Simple thought experiment with Stefan-Boltzmann law: energy'

Dear all, in an encounter of an infamous claim by Gerlich and Tscheuschner that the Greenhouse effect is inconsistent with the 2nd law of thermodynamics I came to a simple thought experiment which I wanted to share with you to check my understanding and brush up my knowledge. The thought experiment I tried to calculate through is as follows. I have a sphere (1) with radius ##r##, acting like a black body at a temperature of exactly ##T_1 = 500 K##. With Stefan-Boltzmann you can calculate...
View full post »

Similar threads

Incandescent bulbs in teaching
2
Replies
53
Views
6K
Incandescent Bulb - suitable approximation for voltage-current curve
Replies
2
Views
973
Can RGB LED simulate incandescent bulb 'glow'?
Replies
3
Views
3K
I On Mixing Colors of Light
5
Replies
207
Views
12K
Some questions about spectroscopy
Replies
4
Views
3K
How incandescent light bulbs create light
Replies
5
Views
2K
Misc. Let's change another light bulb
Replies
9
Views
3K
Photon Arrival Rate, Chapter 1.5 from Computer Graphics by Folly
Replies
15
Views
2K
Understanding Infrared Light Sensors and the Inverse Square Law
Replies
10
Views
23K
B I don't understand exactly how the propagation of light works
Replies
17
Views
3K

Hot Threads

Recent Insights

Back
Top