Identify the frequency of each of these light sources

Assignment Help Physics

Reference no: EM13117167

Oxygenated hemoglobin absorbs weakly in the red (hence its red color) and strongly in the near infrared, while deoxygenated hemoglobin has the opposite absorption. This fact is used in a "pulse oximeter" to measure oxygen saturation in arterial blood. The device clips onto the end of a person's finger and has two light-emitting diodes [a red (680 nm) and an infrared (965 nm)] and a photocell that detects the amount of light transmitted through the finger at each wavelength.

(a) Determine the frequency of each of these light sources.

(b) If 66% of the energy of the red source is absorbed in the blood, by what factor does the amplitude of the electromagnetic wave change?

Reference no: EM13117167

Questions Cloud

Determine probability that a wins contest if he plays first : Their probabilities for success on a single play are p for A and q for B, and successive plays are independent. Determine the probability that A wins the contest given that A plays first.

Use trinomial expansion : (PTC) tasting is dominant (T) to nontasting (t). If a taster woman with a nontaster father produces childeren with a taster man, and the man previously had a nontaster daughter, what would be the probability that if they had six children, they wou..

Would there be a greater effect on the import of the sugar : The new antibiotic cubicin works by creating a passive transport channel for H+. Obviously this would affect the PMF, but other cell processes may be disrupted as well. How would treatment with cubicin affect flagellar motility and chemotaxis.

What action bacterial cells can take to cope with the stress : For each of the following stressful environments, state what molecular stress the bacteria will face, and what action bacterial cells can take to cope with the stress.

Identify the frequency of each of these light sources : a photocell that detects the amount of light transmitted through the finger at each wavelength. Identify the frequency of each of these light sources. If 66% of the energy of the red source is absorbed in the blood, by what factor does the amplitu..

Evaluate how deep is the tank : When the afternoon Sun reaches an angle of 27.0° above the horizon, sunlight ceases to illuminate the bottom of the tank. Evaluate how deep is the tank?

Find number of neurons-probability-sondition one is given : What is the number of neurons n such that the probability of more than n neurons have higher firing rates for Condition 1is 0.99?

How many moles of nacl are dissolved in that solution : if molarity of a 2000ml solution is 4.0M NaCl, how many moles of NaCl are dissolved in that solution.

What was the yield for fraction 2 : Suppose that you conducted a tissue fractionation and that you collected aliquots at each step. Suppose that in step one you suspended tissue in 100 ml buffer then homogenized the tissue.

User Account

All Pages