Exam (elaborations)
CCDs d questions and answer verified 2024
- Course
- Institution
CCDs d questions and answer verified 2024
[Show more]
Content preview
CCDsWhat does CCDs stand for ? - correct answer ✔charge-coupled devices
What are CCDs ? - correct answer ✔Silicon chips divided up into a grid of
pixels
How do CCDs work ? - correct answer ✔- photons hit a pixel
- liberates electron via photoelectric effect
- resulting in a small charge
- charge can be used and measured to create a digital signal
What does the digital signal generated do ? - correct answer ✔Describes
where the light hits and its intensity (because the charge on each pixel will
vary depending on how many photons hit it)
This allows digital image of objects to be created
What is quantum efficiency ? - correct answer ✔The percentage of incident
photons that release an electron
What is the typical quantum efficiency for a CCD ? - correct answer ✔80%
Compare the quantum efficiency of the eyes with the quantum efficiency of a
ccd - correct answer ✔- quantum efficiency of CCD = 80%
- a cell in the eye has quantum efficiency of about 1%
- so CCDs can detect far more of the light that falls on them than the eye
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LEWISSHAWN55. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73091 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now