The rotation per minute (RPM) is a fascinating unit of rotational speed that measures the number of complete turns an object makes in one minute. Though RPM is most commonly associated with car engines and records players, it’s a vital metric in a wide array of industries, including aviation, where turbine engines can reach up to 10,000 RPMs. Fun fact: beyond Earth, RPM played a crucial part in the Apollo missions—during re-entry, the command module performed a slow spin at around 2 RPMs to ensure even heat distribution!
In the everyday whimsy of RPM, consider that your average washing machine can spin at an impressive 1,200 RPM during the spin cycle. Additionally, high-speed trains like the Japanese Shinkansen have wheels rotating at about 280 RPM while cruising at speeds over 300 km/h, showing how RPM bridges the gap between mundane household chores and cutting-edge transportation technology.
Terahertz, symbolized as THz, is a unit of frequency equivalent to one trillion cycles per second, or 1,000,000,000,000 Hz. In the electromagnetic spectrum, terahertz waves occupy the fascinating territory between microwaves and infrared light. This region, often referred to as the “terahertz gap,” has long captivated scientists because of its potential in numerous applications, including advanced imaging techniques, security screening, and even the detection of defects in materials.
Remarkably, terahertz radiation is non-ionizing, meaning it is much safer for biological tissues compared to X-rays. This capability opens doors to potentially revolutionary medical imaging and diagnostics opportunities without the risk of harmful radiation exposure. As researchers continue to explore this “hidden power,” the future holds exciting prospects for terahertz technology across a multitude of fields.
Rotations per minute | Terahertz |
---|---|
0
rpm
|
0
THz
|
50
rpm
|
8.33333e-13
THz
|
100
rpm
|
1.66667e-12
THz
|
150
rpm
|
2.5e-12
THz
|
200
rpm
|
3.33333e-12
THz
|
250
rpm
|
4.16667e-12
THz
|
300
rpm
|
5e-12
THz
|
350
rpm
|
5.83333e-12
THz
|
400
rpm
|
6.66667e-12
THz
|
450
rpm
|
7.5e-12
THz
|
500
rpm
|
8.33333e-12
THz
|
550
rpm
|
9.16667e-12
THz
|
600
rpm
|
1e-11
THz
|
650
rpm
|
1.08333e-11
THz
|
700
rpm
|
1.16667e-11
THz
|
750
rpm
|
1.25e-11
THz
|
800
rpm
|
1.33333e-11
THz
|
850
rpm
|
1.41667e-11
THz
|
900
rpm
|
1.5e-11
THz
|
950
rpm
|
1.58333e-11
THz
|
1000
rpm
|
1.66667e-11
THz
|
1050
rpm
|
1.75e-11
THz
|
1100
rpm
|
1.83333e-11
THz
|
1150
rpm
|
1.91667e-11
THz
|
1200
rpm
|
2e-11
THz
|
1250
rpm
|
2.08333e-11
THz
|
1300
rpm
|
2.16667e-11
THz
|
1350
rpm
|
2.25e-11
THz
|
1400
rpm
|
2.33333e-11
THz
|
1450
rpm
|
2.41667e-11
THz
|
1500
rpm
|
2.5e-11
THz
|
1550
rpm
|
2.58333e-11
THz
|
1600
rpm
|
2.66667e-11
THz
|
1650
rpm
|
2.75e-11
THz
|
1700
rpm
|
2.83333e-11
THz
|
1750
rpm
|
2.91667e-11
THz
|
1800
rpm
|
3e-11
THz
|
1850
rpm
|
3.08333e-11
THz
|
1900
rpm
|
3.16667e-11
THz
|
1950
rpm
|
3.25e-11
THz
|
2000
rpm
|
3.33333e-11
THz
|
2050
rpm
|
3.41667e-11
THz
|
2100
rpm
|
3.5e-11
THz
|
2150
rpm
|
3.58333e-11
THz
|
2200
rpm
|
3.66667e-11
THz
|
2250
rpm
|
3.75e-11
THz
|
2300
rpm
|
3.83333e-11
THz
|
2350
rpm
|
3.91667e-11
THz
|
2400
rpm
|
4e-11
THz
|
2450
rpm
|
4.08333e-11
THz
|
2500
rpm
|
4.16667e-11
THz
|
2550
rpm
|
4.25e-11
THz
|
2600
rpm
|
4.33333e-11
THz
|
2650
rpm
|
4.41667e-11
THz
|
2700
rpm
|
4.5e-11
THz
|
2750
rpm
|
4.58333e-11
THz
|
2800
rpm
|
4.66667e-11
THz
|
2850
rpm
|
4.75e-11
THz
|
2900
rpm
|
4.83333e-11
THz
|
2950
rpm
|
4.91667e-11
THz
|
3000
rpm
|
5e-11
THz
|
3050
rpm
|
5.08333e-11
THz
|
3100
rpm
|
5.16667e-11
THz
|
3150
rpm
|
5.25e-11
THz
|
3200
rpm
|
5.33333e-11
THz
|
3250
rpm
|
5.41667e-11
THz
|
3300
rpm
|
5.5e-11
THz
|
3350
rpm
|
5.58333e-11
THz
|
3400
rpm
|
5.66667e-11
THz
|
3450
rpm
|
5.75e-11
THz
|
3500
rpm
|
5.83333e-11
THz
|
3550
rpm
|
5.91667e-11
THz
|
3600
rpm
|
6e-11
THz
|
3650
rpm
|
6.08333e-11
THz
|
3700
rpm
|
6.16667e-11
THz
|
3750
rpm
|
6.25e-11
THz
|
3800
rpm
|
6.33333e-11
THz
|
3850
rpm
|
6.41667e-11
THz
|
3900
rpm
|
6.5e-11
THz
|
3950
rpm
|
6.58333e-11
THz
|
4000
rpm
|
6.66667e-11
THz
|
4050
rpm
|
6.75e-11
THz
|
4100
rpm
|
6.83333e-11
THz
|
4150
rpm
|
6.91667e-11
THz
|
4200
rpm
|
7e-11
THz
|
4250
rpm
|
7.08333e-11
THz
|
4300
rpm
|
7.16667e-11
THz
|
4350
rpm
|
7.25e-11
THz
|
4400
rpm
|
7.33333e-11
THz
|
4450
rpm
|
7.41667e-11
THz
|
4500
rpm
|
7.5e-11
THz
|
4550
rpm
|
7.58333e-11
THz
|
4600
rpm
|
7.66667e-11
THz
|
4650
rpm
|
7.75e-11
THz
|
4700
rpm
|
7.83333e-11
THz
|
4750
rpm
|
7.91667e-11
THz
|
4800
rpm
|
8e-11
THz
|
4850
rpm
|
8.08333e-11
THz
|
4900
rpm
|
8.16667e-11
THz
|
4950
rpm
|
8.25e-11
THz
|
5000
rpm
|
8.33333e-11
THz
|
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