The “couple” is an intriguing unit that measures torque, essentially describing a pair of equal and opposite forces acting on a body in parallel planes. Despite its relatively obscure use in modern contexts compared to units like the newton-meter, the concept of a couple is fundamental in engineering and physics. It is vital in the analysis of systems that require rotational movements, such as gears, engines, and propeller shafts, highlighting the unit’s significance in various mechanical and structural applications.
Interestingly, what’s unique about a couple is that its effectiveness is independent of the point of rotation. This property allows engineers to simplify complex systems, focusing purely on the magnitude and direction of rotation rather than the specific pivot point, making their calculations both practical and efficient.
The term “score” as a unit of measurement dates back to ancient times and is famously known from Abraham Lincoln’s Gettysburg Address, in which he refers to “four score and seven years ago,” meaning 87 years. A score traditionally signifies a group of 20, which has its origins in Old Norse with the word “skor,” referring to a notch, tally, or mark made for counting. Interestingly, this concept of counting in groups of 20 can be traced back to shepherds who would keep track of their flocks by marking a notch every 20 sheep in a counting stick.
Scores have also found their way into cultural contexts. For instance, the term “score” is used in sports and games to indicate points. In this sense, it symbolizes not just a numerical value but the essence of achievement and success. By linking numeric value to milestones, score as a unit demonstrates the interplay between language and cultural development over centuries.
| Couples | Scores |
|---|---|
0
cp
|
0
scores
|
0.5
cp
|
0.05
scores
|
1
cp
|
0.1
scores
|
1.5
cp
|
0.15
scores
|
2
cp
|
0.2
scores
|
2.5
cp
|
0.25
scores
|
3
cp
|
0.3
scores
|
3.5
cp
|
0.35
scores
|
4
cp
|
0.4
scores
|
4.5
cp
|
0.45
scores
|
5
cp
|
0.5
scores
|
5.5
cp
|
0.55
scores
|
6
cp
|
0.6
scores
|
6.5
cp
|
0.65
scores
|
7
cp
|
0.7
scores
|
7.5
cp
|
0.75
scores
|
8
cp
|
0.8
scores
|
8.5
cp
|
0.85
scores
|
9
cp
|
0.9
scores
|
9.5
cp
|
0.95
scores
|
10
cp
|
1
scores
|
10.5
cp
|
1.05
scores
|
11
cp
|
1.1
scores
|
11.5
cp
|
1.15
scores
|
12
cp
|
1.2
scores
|
12.5
cp
|
1.25
scores
|
13
cp
|
1.3
scores
|
13.5
cp
|
1.35
scores
|
14
cp
|
1.4
scores
|
14.5
cp
|
1.45
scores
|
15
cp
|
1.5
scores
|
15.5
cp
|
1.55
scores
|
16
cp
|
1.6
scores
|
16.5
cp
|
1.65
scores
|
17
cp
|
1.7
scores
|
17.5
cp
|
1.75
scores
|
18
cp
|
1.8
scores
|
18.5
cp
|
1.85
scores
|
19
cp
|
1.9
scores
|
19.5
cp
|
1.95
scores
|
20
cp
|
2
scores
|
20.5
cp
|
2.05
scores
|
21
cp
|
2.1
scores
|
21.5
cp
|
2.15
scores
|
22
cp
|
2.2
scores
|
22.5
cp
|
2.25
scores
|
23
cp
|
2.3
scores
|
23.5
cp
|
2.35
scores
|
24
cp
|
2.4
scores
|
24.5
cp
|
2.45
scores
|
25
cp
|
2.5
scores
|
25.5
cp
|
2.55
scores
|
26
cp
|
2.6
scores
|
26.5
cp
|
2.65
scores
|
27
cp
|
2.7
scores
|
27.5
cp
|
2.75
scores
|
28
cp
|
2.8
scores
|
28.5
cp
|
2.85
scores
|
29
cp
|
2.9
scores
|
29.5
cp
|
2.95
scores
|
30
cp
|
3
scores
|
30.5
cp
|
3.05
scores
|
31
cp
|
3.1
scores
|
31.5
cp
|
3.15
scores
|
32
cp
|
3.2
scores
|
32.5
cp
|
3.25
scores
|
33
cp
|
3.3
scores
|
33.5
cp
|
3.35
scores
|
34
cp
|
3.4
scores
|
34.5
cp
|
3.45
scores
|
35
cp
|
3.5
scores
|
35.5
cp
|
3.55
scores
|
36
cp
|
3.6
scores
|
36.5
cp
|
3.65
scores
|
37
cp
|
3.7
scores
|
37.5
cp
|
3.75
scores
|
38
cp
|
3.8
scores
|
38.5
cp
|
3.85
scores
|
39
cp
|
3.9
scores
|
39.5
cp
|
3.95
scores
|
40
cp
|
4
scores
|
40.5
cp
|
4.05
scores
|
41
cp
|
4.1
scores
|
41.5
cp
|
4.15
scores
|
42
cp
|
4.2
scores
|
42.5
cp
|
4.25
scores
|
43
cp
|
4.3
scores
|
43.5
cp
|
4.35
scores
|
44
cp
|
4.4
scores
|
44.5
cp
|
4.45
scores
|
45
cp
|
4.5
scores
|
45.5
cp
|
4.55
scores
|
46
cp
|
4.6
scores
|
46.5
cp
|
4.65
scores
|
47
cp
|
4.7
scores
|
47.5
cp
|
4.75
scores
|
48
cp
|
4.8
scores
|
48.5
cp
|
4.85
scores
|
49
cp
|
4.9
scores
|
49.5
cp
|
4.95
scores
|
50
cp
|
5
scores
|
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