The author posted a question in Science, Technology, Languages
Why is a CD round? and got a better answer
Response from
More profitable, so a circle has the maximum area for the minimum length of the circle Take a string, for example, and make a circle out of it. The area of such a circle will be greater than if you make a square out of the same thread Then it is more convenient and much easier to read. Because all you have to do is make one movement, which is to twist the disk. And with a square, you'll have to move it lengthwise first, and then step up and then lengthwise again. When you do that, you have to stop it, i.e. immediately the write and read speed will drop by several hundred times?
Response from 0[+++++]
It is more advantageous because a circle has the maximum area with the minimum length of the circumference Take a string, for example, and make a circle out of it. The area of such a circle will be greater than if you make a square from the same thread Then it is more convenient and much easier to read. Because all you have to do is make one movement, which is to twist the disk. And with a square, you'll have to move it lengthwise first, and then step up and then lengthwise again. When you do that, you have to stop it, which means that immediately the read and write speeds will drop by several hundred times
It is more advantageous because a circle has the maximum area with the minimum length of the circumference Take a string, for example, and make a circle out of it. The area of such a circle will be greater than if you make a square from the same thread Then it is more convenient and much easier to read. Because all you have to do is make one movement, which is to twist the disk. And with a square, you'll have to move it lengthwise first, and then step up and then lengthwise again. When you do that, you have to stop it, which means that immediately the read and write speeds will drop by several hundred times
Response from 0[+++++]
the square one doesn't rotate well.
the square one doesn't rotate well.
Response from 0[+++]
it's easier to read from-
it's easier to read from-
Response from 0[++++]
because you're stupid--
because you're stupid--
Response from 0[+++++]
It's just that the actuator is larger for the square one, so they decided to make it round.
It's just that the actuator is larger for the square one, so they decided to make it round.
Response from 0[+++++]
There are oval and square. They're really smaller, but they play and read just fine.
There are oval and square. They're really smaller, but they play and read just fine.
Response from 0[++]
But how do you get a cube sized disk into a drive?
But how do you get a cube sized disk into a drive?
Response from 0[+++++]
It's easier to spin that way!
It's easier to spin that way!
Response from 0[+++++]
you won't believe this, but I have a rectangular one. it's not broken, it was like that originally, small though
you won't believe this, but I have a rectangular one. it's not broken, it was like that originally, small though
Response from 0[++]
because the optimum motion of the read head along the grooves is a circle
because the optimum motion of the read head along the grooves is a circle
Response from 0[+++++]
very interesting question! Unseemly question with a question, but then why is the earth round, why does the word sound like a word? Funny, but that's the way the world works!
very interesting question! Unseemly question with a question, but then why is the earth round, why does the word sound like a word? Funny, but that's the way the world works!
Response from 0[+++++]
minimum space, maximum information
minimum space, maximum information
Response from 0[+++++]
geometry-
geometry-
Response from 0[+++++]
Just so convenient!
Just so convenient!
Response from 0[+++++]
The moment of inertia of a circle is much less than the moment of inertia of a square. A square disk will just fly out of the drive at today's speeds. WELL DONE, LENK!
The moment of inertia of a circle is much less than the moment of inertia of a square. A square disk will just fly out of the drive at today's speeds. WELL DONE, LENK!
Response from 0[+]
Circle area= pi*R square. That's the square by the corners and bangs. The circle doesn't. That's why the disk is round. And also when the brains are square, then.
Circle area= pi*R square. That's the square by the corners and bangs. The circle doesn't. That's why the disk is round. And also when the brains are square, then.
Response from 0[+++++]
Because information is recorded and read in a circle or more precisely - in a spiral but the step is so small that the circle is indistinguishable. That's why for the square disk corners are empty and with the same 700 Mbytes recording volume you would have to make a bigger size disk drive to avoid scratching the square corners when rotating.
Because information is recorded and read in a circle or more precisely - in a spiral but the step is so small that the circle is indistinguishable. That's why for the square disk corners are empty and with the same 700 Mbytes recording volume you would have to make a bigger size disk drive to avoid scratching the square corners when rotating.