The term “baker’s dozen” traces back to medieval England, where bakers, fearing severe penalties for selling underweight bread, would include an extra loaf when selling a dozen. This ensured compliance with strict trade regulations, as weights and measures were rigorously enforced. So, a baker’s dozen always amounted to 13 items—an ingenious way for bakers to safeguard their reputations and livelihood.
This historical practice wasn’t just rooted in caution but also helped strengthen customer trust. Interestingly, while the practice began with bakers, the phrase “baker’s dozen” has transcended its origins to represent the number 13 in various contexts, offering a fascinating glimpse into how commerce and language intertwine.
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.
| Bakers Dozen | Couples |
|---|---|
0
bk-doz
|
0
cp
|
0.5
bk-doz
|
3.25
cp
|
1
bk-doz
|
6.5
cp
|
1.5
bk-doz
|
9.75
cp
|
2
bk-doz
|
13
cp
|
2.5
bk-doz
|
16.25
cp
|
3
bk-doz
|
19.5
cp
|
3.5
bk-doz
|
22.75
cp
|
4
bk-doz
|
26
cp
|
4.5
bk-doz
|
29.25
cp
|
5
bk-doz
|
32.5
cp
|
5.5
bk-doz
|
35.75
cp
|
6
bk-doz
|
39
cp
|
6.5
bk-doz
|
42.25
cp
|
7
bk-doz
|
45.5
cp
|
7.5
bk-doz
|
48.75
cp
|
8
bk-doz
|
52
cp
|
8.5
bk-doz
|
55.25
cp
|
9
bk-doz
|
58.5
cp
|
9.5
bk-doz
|
61.75
cp
|
10
bk-doz
|
65
cp
|
10.5
bk-doz
|
68.25
cp
|
11
bk-doz
|
71.5
cp
|
11.5
bk-doz
|
74.75
cp
|
12
bk-doz
|
78
cp
|
12.5
bk-doz
|
81.25
cp
|
13
bk-doz
|
84.5
cp
|
13.5
bk-doz
|
87.75
cp
|
14
bk-doz
|
91
cp
|
14.5
bk-doz
|
94.25
cp
|
15
bk-doz
|
97.5
cp
|
15.5
bk-doz
|
100.75
cp
|
16
bk-doz
|
104
cp
|
16.5
bk-doz
|
107.25
cp
|
17
bk-doz
|
110.5
cp
|
17.5
bk-doz
|
113.75
cp
|
18
bk-doz
|
117
cp
|
18.5
bk-doz
|
120.25
cp
|
19
bk-doz
|
123.5
cp
|
19.5
bk-doz
|
126.75
cp
|
20
bk-doz
|
130
cp
|
20.5
bk-doz
|
133.25
cp
|
21
bk-doz
|
136.5
cp
|
21.5
bk-doz
|
139.75
cp
|
22
bk-doz
|
143
cp
|
22.5
bk-doz
|
146.25
cp
|
23
bk-doz
|
149.5
cp
|
23.5
bk-doz
|
152.75
cp
|
24
bk-doz
|
156
cp
|
24.5
bk-doz
|
159.25
cp
|
25
bk-doz
|
162.5
cp
|
25.5
bk-doz
|
165.75
cp
|
26
bk-doz
|
169
cp
|
26.5
bk-doz
|
172.25
cp
|
27
bk-doz
|
175.5
cp
|
27.5
bk-doz
|
178.75
cp
|
28
bk-doz
|
182
cp
|
28.5
bk-doz
|
185.25
cp
|
29
bk-doz
|
188.5
cp
|
29.5
bk-doz
|
191.75
cp
|
30
bk-doz
|
195
cp
|
30.5
bk-doz
|
198.25
cp
|
31
bk-doz
|
201.5
cp
|
31.5
bk-doz
|
204.75
cp
|
32
bk-doz
|
208
cp
|
32.5
bk-doz
|
211.25
cp
|
33
bk-doz
|
214.5
cp
|
33.5
bk-doz
|
217.75
cp
|
34
bk-doz
|
221
cp
|
34.5
bk-doz
|
224.25
cp
|
35
bk-doz
|
227.5
cp
|
35.5
bk-doz
|
230.75
cp
|
36
bk-doz
|
234
cp
|
36.5
bk-doz
|
237.25
cp
|
37
bk-doz
|
240.5
cp
|
37.5
bk-doz
|
243.75
cp
|
38
bk-doz
|
247
cp
|
38.5
bk-doz
|
250.25
cp
|
39
bk-doz
|
253.5
cp
|
39.5
bk-doz
|
256.75
cp
|
40
bk-doz
|
260
cp
|
40.5
bk-doz
|
263.25
cp
|
41
bk-doz
|
266.5
cp
|
41.5
bk-doz
|
269.75
cp
|
42
bk-doz
|
273
cp
|
42.5
bk-doz
|
276.25
cp
|
43
bk-doz
|
279.5
cp
|
43.5
bk-doz
|
282.75
cp
|
44
bk-doz
|
286
cp
|
44.5
bk-doz
|
289.25
cp
|
45
bk-doz
|
292.5
cp
|
45.5
bk-doz
|
295.75
cp
|
46
bk-doz
|
299
cp
|
46.5
bk-doz
|
302.25
cp
|
47
bk-doz
|
305.5
cp
|
47.5
bk-doz
|
308.75
cp
|
48
bk-doz
|
312
cp
|
48.5
bk-doz
|
315.25
cp
|
49
bk-doz
|
318.5
cp
|
49.5
bk-doz
|
321.75
cp
|
50
bk-doz
|
325
cp
|
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