I would like to know that what course should I take for physics subject after finished this middle school physics, please?

High School Physics OR High School Physics - NGSS

"Digital signals are more reliable because interference or noise can be easily removed from the received signal. However, every change within an analog signal contains some information, so interference or noise can be almost impossible to remove." do you mean that interference can be removed from digital but not from analog?

Essentially. Digital values are exact, they leave little room for interpretation, but Analog has more room for error, but also, more room for interpretation. Depending on what Analog is being used for, this could be a good thing.

What is the bad side of Digital analogue?

I would probably say deletion and theft

If waves have ups and downs depending on its volume, it can be that the starting of the wave is at 2, but it doesn't end at two, then how do you find its wavelength if you need to look at its identical points?

The wavelength of a wave is the distance between two identical points in the wave. To find the wavelength of a wave, you can use the equation: wavelength = speed of the wave / frequency of the wave. The speed of the wave is usually given in meters per second (m/s) and the frequency is given in hertz (Hz).12 So if you know the speed and frequency of a wave, you can easily calculate its wavelength using this equation. I hope that helps!

Main content

Course: Middle school physics - NGSS > Unit 4

Lesson 6: Digital signals

Digital signals

Google Classroom

Review your understanding of digital signals in this free article aligned to NGSS standards.

Key points:

Information can be stored in digital or analog form. Digital information is made from a certain set of values, or digits. Analog information is made from possibilities within a range.
For example, a digital clock can show time with the exact values $0$ ‍- $9$ ‍. But the hands on an analog clock can point to any value in the range from $0$ ‍- $12$ ‍.

Information in waves can be transmitted with either digital or analog signals using wave properties like frequency or amplitude.
- The properties of a digital signal match specific values, or digits in their set of values.
- The properties of an analog signal can be any value within a range.
Digital signals are more reliable because interference or noise can be easily removed from the received signal. However, every change within an analog signal contains some information, so interference or noise can be almost impossible to remove.

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mary thant
Posted 9 months ago. Direct link to mary thant's post “I would like to know that...”
I would like to know that what course should I take for physics subject after finished this middle school physics, please?
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(11 votes)
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- Ballet4ever
  Posted 9 months ago. Direct link to Ballet4ever's post “High School Physics OR Hi...”
  High School Physics
  OR
  High School Physics - NGSS
  Comment on Ballet4ever's post “High School Physics OR Hi...”
  (22 votes)
dena escot
Posted 2 years ago. Direct link to dena escot's post “"Digital signals are more...”
"Digital signals are more reliable because interference or noise can be easily removed from the received signal. However, every change within an analog signal contains some information, so interference or noise can be almost impossible to remove." do you mean that interference can be removed from digital but not from analog?
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(10 votes)
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- Wolfy
  Posted 2 years ago. Direct link to Wolfy's post “Essentially. Digital valu...”
  Essentially. Digital values are exact, they leave little room for interpretation, but Analog has more room for error, but also, more room for interpretation. Depending on what Analog is being used for, this could be a good thing.
  Comment on Wolfy's post “Essentially. Digital valu...”
  (19 votes)
Adam 2023
Posted 8 months ago. Direct link to Adam 2023's post “What is the bad side of D...”
What is the bad side of Digital analogue?
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- Volcannon1752
  Posted 8 months ago. Direct link to Volcannon1752's post “I would probably say dele...”
  I would probably say deletion and theft
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kriegsum000
Posted 5 months ago. Direct link to kriegsum000's post “I have no Questions”
I have no Questions
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LUCASG
Posted a year ago. Direct link to LUCASG's post “this is very hard”
this is very hard
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- LUCASG
  Posted a year ago. Direct link to LUCASG's post “i found it out now”
  i found it out now
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saraliusnakessssssssss
Posted a year ago. Direct link to saraliusnakessssssssss's post “If waves have ups and dow...”
If waves have ups and downs depending on its volume, it can be that the starting of the wave is at 2, but it doesn't end at two, then how do you find its wavelength if you need to look at its identical points?
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(3 votes)
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- Abdulloh
  Posted 10 months ago. Direct link to Abdulloh's post “The wavelength of a wave ...”
  The wavelength of a wave is the distance between two identical points in the wave. To find the wavelength of a wave, you can use the equation: wavelength = speed of the wave / frequency of the wave. The speed of the wave is usually given in meters per second (m/s) and the frequency is given in hertz (Hz).12
  
  So if you know the speed and frequency of a wave, you can easily calculate its wavelength using this equation. I hope that helps!
  Comment on Abdulloh's post “The wavelength of a wave ...”
  (6 votes)
GamreAndrew
Posted 5 months ago. Direct link to GamreAndrew's post “what a fun lesson!”
what a fun lesson!
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(5 votes)
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ARGENISL
Posted 5 months ago. Direct link to ARGENISL's post “which clock would be the ...”
which clock would be the better option to use ?
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- It's Raeed
  Posted 5 months ago. Direct link to It's Raeed's post “i think its analog”
  i think its analog
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  (3 votes)
zachary.waddill
Posted 8 months ago. Direct link to zachary.waddill's post “ya thay are different”
ya thay are different
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love987654321951
Posted 8 months ago. Direct link to love987654321951's post “Analog will pick up more ...”
Analog will pick up more frequency easier and this is seen as a disadvantage.
Why not send an agreed frequency via analog to see how much it is interfered with, as a form of finding unusual activity from ships or weather or something? Would this be a reliable method to detect strange frequencies? Is this method already used in weather, satellites and the army?
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(3 votes)
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- s22omoiguii
  Posted 5 months ago. Direct link to s22omoiguii's post “That's very intuitive imo”
  That's very intuitive imo
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