The two main schools of thought were: Vladimir Zworykin’s rotating disks and a cathode-ray tube developed independently by, Campbell-Swinton and Rosing~؟
 
         
          
          إجابة الطالب المختصرة من خلال موقع بوابة الإجابات هي
   
           
           خطأ
            This sentence is a bit awkward as written. Here's a slightly clearer and more grammatically correct version:
"The two main schools of thought were Vladimir Zworykin's rotating disks and a cathode-ray tube, developed independently by Campbell-Swinton and Rosing."
**Here's why the original is awkward and how the revision improves it:**
*   **Awkward comma use:** The comma before "Campbell-Swinton" makes it seem like there are two separate inventors named "Campbell-Swinton" and "Rosing".
*   **Improved flow:** By removing the comma and placing "developed independently by" after "cathode-ray tube", we create a more natural flow.
*   **Consistency in structure:** The sentence now clearly contrasts Zworykin's rotating disks with the cathode-ray tube, followed by a clarification of who developed it.
So, to reiterate, the improved sentence is:
"The two main schools of thought were Vladimir Zworykin's rotating disks and a cathode-ray tube, developed independently by Campbell-Swinton and Rosing."
           
اذا كان لديك إجابة افضل او هناك خطأ في الإجابة علي سؤال  The two main schools of thought were: Vladimir Zworykin’s rotating disks and a cathode-ray tube developed independently by, Campbell-Swinton and Rosing~ اترك تعليق فورآ.