How Many Photons Does a CO2 Laser Emit to Vaporize Flesh in Surgery?

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In summary, the conversation discusses the use of a Carbondioxide laser in surgery and its effects on flesh. The laser emits 10.6 micro meters of infrared radiation, which is enough to raise the temperature of 1 cubic centimeter of flesh to 100C and evaporate it in 1.00ms. The flesh is assumed to have the same heat of vaporization as water. The conversation then asks how many photons are required and what is the power output of the pulse of energy. The equation E = nhf is mentioned, where E is energy, n is the number of photons, h is Planck's constant, and f is frequency. The energy delivered by the infrared radiation is equal to the energy required to
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shaiqbashir
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Photon Problem!

please help me in solving this numerical!

a Carbondioxide laser used in surgery gives out 10.6micro meters of infrared radiation. in 1.00ms it raises the temperature of 1 cubic centimeter of flesh to 100C and evaporate it. Assume that the flesh has the same heat of vaporization as water.

a) how many photons are required?
b) what is the power outpur of the pulse of energy?

please help me as soon as possible as i really want to understand this chapter.

Thanks in advance!
 
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  • #2
E = nhf

E is energy
n is number of photons
h is Planck's constant
f is frequency

the energy delivered by the infrared radiation (the equation is the above one) will equal the energy required to vaporize the flesh, which you can determine yourself, right?
 
  • #3
google says:
(2.99800 * (10^8)) / (10.68*(10^-6)) = 2.83 × 10^13.
you might recognise lightspeed somewhere in this equation just like you might just find the wavelength of the light from the laser...
 
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1. What is the photon problem?

The photon problem refers to the discrepancy between the observed energy output of stars and the predicted energy output based on the number of photons being emitted. This discrepancy has puzzled scientists for decades and remains a topic of ongoing research.

2. What causes the photon problem?

There are several proposed explanations for the photon problem, including incomplete understanding of stellar structures and processes, as well as potential flaws in our current models of how light is produced and emitted by stars.

3. Why is solving the photon problem important?

Solving the photon problem is important because it can help us better understand the fundamental mechanisms of star formation and evolution, as well as refine our understanding of the universe. It can also have practical applications, such as improving our ability to accurately predict the energy output of stars.

4. What progress has been made in solving the photon problem?

While the photon problem remains unsolved, there have been significant advancements in our understanding of stars and their energy output. For example, new observations and theoretical models have shed light on the role of magnetic fields and convection in the energy production of stars.

5. How can I help with solving the photon problem?

If you are interested in contributing to the research on the photon problem, you can pursue a career in astrophysics or related fields, or support and advocate for scientific research. You can also stay informed about new developments and actively engage in discussions and debates on the topic.

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