- #1
Aafia
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This term is new for me so explain it simply ... and give a simple definition about cutt off frequency
What is the Cut-off Frequency and How Does it Affect Signal Processing?
- Context: High School
- Thread starter Aafia
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Discussion Overview
The discussion revolves around the concept of cutoff frequency, particularly in the context of signal processing and the photoelectric effect. Participants seek a simple definition and examples of its application, exploring its implications in different contexts.
Discussion Character
- Conceptual clarification
- Debate/contested
Main Points Raised
- Some participants request a simple definition of cutoff frequency and examples of its use.
- One participant mentions encountering the term in a physics book discussing the photoelectric effect, where it refers to the frequency below which electrons are not ejected from a metal surface.
- Another participant notes that cutoff frequency can have different meanings in various contexts, such as in electrical circuits like radio tuners.
- There is a suggestion that clarity in communication is important, particularly regarding the context in which the term is used.
Areas of Agreement / Disagreement
Participants generally agree on the need for a clearer understanding of the term "cutoff frequency," but multiple interpretations and contexts remain unresolved.
Contextual Notes
Some participants express difficulty in finding straightforward explanations, indicating a potential limitation in the availability of accessible resources on the topic.
Who May Find This Useful
This discussion may be useful for individuals seeking foundational knowledge about cutoff frequency in physics and signal processing, particularly those new to the topic.
- #2
DrGreg
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Please give an example of where you have seen this.Aafia said:
If you've seen it on the internet, give a link, otherwise give the sentence i
- #3
Vanadium 50
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Aafia, looking at this and your other questions, I think you will get more out of PF if you read this: https://www.physicsforums.com/threads/very-little-excuse-to-ask-a-question-cold.765735/
Also, you will have better luck if you spell it "cut".
Also, you will have better luck if you spell it "cut".
- #4
Aafia
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Sory... i have search it in google but it use complicated wordsVanadium 50 said:
- #5
Aafia
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I have seen it in physics book chapter about light and the topic is photoelectric effect ..DrGreg said:
- #6
jtbell
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Thanks. 
So you probably know that when you shine light on a metal surface, it ejects electrons. As the frequency of the light increases, the maximum kinetic energy of the electrons increases. As the frequency of the light decreases, the maximum KE of the electrons decreases, and there is a certain frequency at which the maximum KE of the electrons becomes zero. Below that frequency, the photoelectric effect doesn't happen. We call that the "cutoff frequency."
In general, a word or phrase can be used on more than one context, with different meanings in each context. Furthermore, different authors may use the same word in different ways, even though they agree on the mathematics that goes along with it. That's why it's important to tell us what you're reading about, and where you read it, and whatever equations go along with it, if any.
In this case, I can imagine "cutoff frequency" also being used to describe some kinds of electrical circuits, e.g. radio tuners.
So you probably know that when you shine light on a metal surface, it ejects electrons. As the frequency of the light increases, the maximum kinetic energy of the electrons increases. As the frequency of the light decreases, the maximum KE of the electrons decreases, and there is a certain frequency at which the maximum KE of the electrons becomes zero. Below that frequency, the photoelectric effect doesn't happen. We call that the "cutoff frequency."
In general, a word or phrase can be used on more than one context, with different meanings in each context. Furthermore, different authors may use the same word in different ways, even though they agree on the mathematics that goes along with it. That's why it's important to tell us what you're reading about, and where you read it, and whatever equations go along with it, if any.
In this case, I can imagine "cutoff frequency" also being used to describe some kinds of electrical circuits, e.g. radio tuners.
- #7
Aafia
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Thanks
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