1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ehidna [41]
2 years ago
6

How was science used to make television?

Computers and Technology
2 answers:
Cloud [144]2 years ago
6 0

Answer:

Sir William Crookes invented the cathode ray tube in 1878, but these discoveries took many years to merge into the common ground of television. ... His mechanical system used a scanning disk with small holes to pick up image fragments and imprint them on a light-sensitive selenium tube. A receiver reassembled the picture.

<em>Television is really a three-part invention: the TV camera that turns a picture and sound into a signal; the TV transmitter that sends the signal through the air; and the TV receiver (the TV set in your home) that captures the signal and turns it back into picture and sound. </em>

<em>https://www.jstor.org/stable/20024824</em><em> </em><em>(</em><em> </em><em>This </em><em>link </em><em>is </em><em>helpful</em><em>)</em>

Wewaii [24]2 years ago
5 0

Answer:

Sir William Crookes invented the cathode ray tube in 1878, but these discoveries took many years to merge into the common ground of television. His mechanical system used a scanning disk with small holes to pick up image fragments and imprint them on a light-sensitive selenium tube. A receiver reassembled the picture.

You might be interested in
⚠VERY IMPORTANT MESSAGE⚠
Wittaler [7]

Thank you for this message!

Whoever is reading this, please stay safe from those scammers.

このメッセージをありがとう!

これを読んでいる人は誰でも、それらの詐欺師から安全を守ってください。

이 메시지에 감사드립니다!

이 글을 읽는 사람은 사기꾼들로부터 안전을 유지하십시오.

Quien esté leyendo esto, manténgase a salvo de esos estafadores.

7 0
2 years ago
Read 2 more answers
What is 16/17 simplified?
77julia77 [94]
16/17 can't be simplified but if you want it as a decimal it's 0.9412 or 0.94
7 0
3 years ago
Read 2 more answers
Write the definition of the function inputArray that prompts the user to input 20 numbers and stores the numbers into alpha. Wri
Alina [70]

Answer:

In Java:

public static  int[] inputArray(){

   Scanner input = new Scanner(System.in);

   int[] alpha = new int[20];

   for(int i = 0;i<20;i++){

       alpha[i] = input.nextInt();

   }

   return alpha;}

public static  int[] doubleArray(int [] alpha){

   int[] beta = new int[20];

   for(int i = 0;i<20;i++){

       beta[i] = 2 * alpha[i];

   }

   return beta;

}

public static int[] copyAlphaBeta(int [] alpha, int [] beta){

   int [] AlphaBeta = new  int[10];

   for(int i = 0;i<5;i++){

       AlphaBeta[i] = alpha[i];

   }

   int count = 5;

   for(int i = 15;i<20;i++){

       AlphaBeta[count] = beta[i];

       count++;

   }

   return AlphaBeta;

}

public static void printArray(int [] alpha){

   for(int i = 0;i<20;i++){

       System.out.print(alpha[i]+" ");

       if((i+1)%15 == 0){

           System.out.println(" ");

       }

   }

}

Explanation:

The inputArray is defined here

public static  int[] inputArray(){

   Scanner input = new Scanner(System.in);

This declares alpha array of 20 elements

   int[] alpha = new int[20];

The following iteration gets input from the user into the array

<em>    for(int i = 0;i<20;i++){</em>

<em>        alpha[i] = input.nextInt();</em>

<em>    }</em>

This returns the alpha array

   return alpha;}

The doubleArray is defined here. It takes the alpha array as its input parameter

public static  int[] doubleArray(int [] alpha){

This declares beta of 20 integers

   int[] beta = new int[20];

This populates beta by 2 * alpha[i]

<em>    for(int i = 0;i<20;i++){</em>

<em>        beta[i] = 2 * alpha[i];</em>

<em>    }</em>

This returns the alpha array

   return beta;}

The copyAlphaBeta array is defines here

public static int[] copyAlphaBeta(int [] alpha, int [] beta){

This declares AlphaBeta as 10 elements

   int [] AlphaBeta = new  int[10];

This populates the first 5 elements of AlphaBeta with the first 5 of alpha

<em>    for(int i = 0;i<5;i++){</em>

<em>        AlphaBeta[i] = alpha[i];</em>

<em>    }</em>

   int count = 5;

This populates the last 5 elements of AlphaBeta with the last 5 of beta

<em>    for(int i = 15;i<20;i++){</em>

<em>        AlphaBeta[count] = beta[i];</em>

<em>        count++;</em>

<em>    }</em>

This returns the AlphaBeta array

   return AlphaBeta;

}

The printArray is defined here. It takes the alpha array as its input parameter

public static void printArray(int [] alpha){

This iterates through alpha array

   for(int i = 0;i<20;i++){

This prints each element of the array

       System.out.print(alpha[i]+" ");

A new line is started after the 15th element

<em>        if((i+1)%15 == 0){</em>

<em>            System.out.println(" ");</em>

<em>        }</em>

   }

}

See attachment for complete program which includes the main

Download txt
4 0
2 years ago
while investigating the settings on your SOHO router, you find two IP address reported on the devices's routing table, which is
DochEvi [55]

Answer:

From the two IP addresses, 192.168.2.1 can be listed as the default gateway in local network devices.

The reason is that we are allocated with the ranges that are reserved for the local networks by RFC 1918.

These ranges are given as follows:

  • For (10/8 prefix)  

                            10.0.0.0 - 10.255.255.255

  • (172.16/12 prefix)

                            172.16.0.0 - 172.31.255.255

  • (192.168/16 prefix)

                            192.168.0.0 - 192.168.255.255

Moreover the default gateway for a device can also be known by the commands ipconfig or  ipconfig/all on the command prompt.

<h3>I hope it will help you!</h3>
7 0
2 years ago
A circuit contains three resistors connected in parallel. The value of R1 is 2 K , the value or R2 is 6 K , and the value of R3
mezya [45]
In a parallel connection, the voltage is same in every branch.
Now, three <span>three resistors connected in parallel.
R1 = 2k ohm
</span>R2 = 6k ohm
R3 = 10k ohm
in parallel, net resisitance  = \frac{ R_{1}R_{2}R_{3} }{R_{1}R_{2} + R_{2}R_{3} + R_{3}R_{1}}

Now, putting the values, we get, R net = 1.30 k ohm.
Ans, voltage = 100 VDC
Thus, power = \frac{ V^{2} }{R} = \frac{ 100^{2} }{1.3 k} \\ \\ where \\ k = 10^{3} 
                      = 7.69 Watt
6 0
3 years ago
Other questions:
  • 2. What is the purpose of an outline? (1 point)
    8·1 answer
  • In which area of engineering does material selection play a vital role a design optimization b forensic engineering c mechanical
    6·1 answer
  • Billy used to take care of his laptop. However, one day he lost his laptop. He lost all his data, and there was no way to retrie
    10·2 answers
  • A computer has the following parameters Operation Frequency Cycles Arithmetic/Logical instructions 65% 1 Register load operation
    11·1 answer
  • A(n) _____ is a request for the database management software to search the database for data that match criteria specified by th
    15·2 answers
  • What is the Matlab command to create a column vector with 11 equally spaced elements, whose first element is 2 and whose last is
    8·1 answer
  • The minimum spanning tree of an undirected graph G exists if and only if G is connected. True or False?
    12·1 answer
  • Which part of the operating system enables you to interact with the device? Question 9 options: The graphical user interface The
    8·1 answer
  • Which component of a word processor displays the name of the document?
    13·1 answer
  • you manage a network that has multiple internal subnets. you connect a workstation to the 192.168.1.0/24 subnet. this workstatio
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!