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ehidna [41]
3 years ago
6

How was science used to make television?

Computers and Technology
2 answers:
Cloud [144]3 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]3 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.

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When using the text command, what needs to be around the word or words you<br> want to appear?
AysviL [449]

Answer:

In most programming languages "" are required around text.

Explanation:

Python: print("text")

HTML: <p>text</p>

C++: int Main() {

cout << "text" << endl;

}

Lua: print("text")

8 0
3 years ago
The code below uses the Space macro which simply displays the number of blank spaces specified by its argument. What is the firs
IceJOKER [234]

Answer:

Code explained below

Explanation:

Include Irvine32.inc

INCLUDE Macros.inc               ;Include macros for space

.code

main proc

  push 4                   ;Push 4 to the stack

push 10                   ;Push 10 to the stack

  call rcrsn                   ;call the function  

  exit

  ;invoke ExitProcess,0           ;After return from the function

                      ;call exit function

  main ENDP               ;end the main

  rcrsn PROC               ;define the function

      push ebp               ;push the ebp into stack

      mov ebp,esp           ;set ebp as frame pointer

      mov eax,[ebp + 12]       ;This is for second parameter

      mov ebx,[ebp + 8]       ;This is for first parameter

      cmp eax,ebx           ;compare the registers

      jl recurse           ;jump to another function  

      jmp quit               ;call quit

      recurse:               ;Implement another function  

      inc eax               ;increment count value

      push eax               ;push the eax value into stack

      push ebx               ;push ebx into stack

      call rcrsn           ;call above function

      mov eax,[ebp + 12]       ;This is for second parameter

      call WriteDec           ;write the value on the screen

      mWritespace 2           ;Space macro print 2 spaces

                      ;pause the screen

      quit:               ;Implement quit function

      pop ebp               ;pop the pointer value from the stack

      ret 8               ;clean up the stack

 

  rcrsn ENDP          

end main

6 0
4 years ago
To analyze data from a survey, you use a spreadsheet to calculate the percent of students who prefer corn over broccoli or carro
alisha [4.7K]

<u>Answer</u>:

<em>By changing the decimal to a percentage </em>

<u>Explanation:</u>

Since the requirement is to calculate the percentage of students about their preference in eating vegetables, we need to convert the given values to percentage only.  

<em> Option A: </em>By changing the addition sign to a multiplication sign. This is invalid because, there is no addition and multiplication involved in converting to percentage

<em>Option C:</em> By changing the percentage to a decimal. The given data is not available in percentage so conversion is impossible.

<em>Option D:</em> By changing the multiplication sign to a division sign Multiplication and division are not going to be performed here, since we need only percentage.

4 0
3 years ago
Read 2 more answers
A poker hand consists of 5 cards drawn at random without replacement from a 52 card deck. Using python and the cards data frame
PSYCHO15rus [73]

Answer:

# Python program to shuffle a deck of card

# importing modules

import itertools, random

# make a deck of cards

deck = list(itertools.product(range(1,14),['Spade','Heart','Diamond','Club']))

# shuffle the cards

random.shuffle(deck)

# draw five cards

print("You got:")

for i in range(5):

  print(deck[i][0], "of", deck[i][1])

Output

You got:

5 of Heart

1 of Heart

8 of Spade

12 of Spade

4 of Spade

Explanation:

5 0
3 years ago
Union Carbide accident safety policies and procedures were not followed was due to
DedPeter [7]

Answer:

Defects in design, maintenance letdowns, lack of training, economy dealings, and blunders in operations.  

Explanation:

The design definitely was not appropriate, and there was lack in maintenance. Also there was lack of training, and blunders in operations. The project was not sound economically as well. And, you should know that problem arose due to water leakage. And that was due to mainly maintenance failure, which you can study in deep through Material Science. Lack of design is part of industrial design and others are part of management.

3 0
3 years ago
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