Convert Millibarn to Shed
Convert millibarns to sheds instantly. 1 millibarn = 1e+21 shed — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Shed to Millibarn converter for the reverse conversion.
Units explained
Millibarn
A millibarn is a scientific unit of area equal to exactly 10⁻³¹ m² (1/1000 of a barn).
Derived from the barn using the standard SI milli- prefix.
Millibarns are widely used in particle physics for medium-strength interaction cross-sections. The total proton-proton inelastic cross-section is on the order of 70 mb at LHC energies.
Standard derivative of the barn unit.
Shed
A shed is a humorous physics unit of area equal to exactly 10⁻⁵² m² (10⁻²⁴ barn or 10⁻¹⁸ outhouse).
Coined by physicists in extending the 'barn' humor. If the barn is the large building, a 'shed' is much smaller.
Sheds are essentially theoretical and appear in physics jokes rather than serious literature. The actual interaction cross-sections at this scale would require extremely speculative beyond-Standard-Model physics.
Physics community humor; theoretical interest only.
Millibarn to Shed conversion formula
The relationship between millibarns and sheds:
To convert millibarns to sheds, multiply the value in millibarns by 1e+21. To reverse, multiply sheds by 1e-21.
How to use this converter
Type a value into the calculator. The result in sheds updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Shed to Millibarn converter for the reverse direction.
Step-by-step: convert millibarns to sheds
- Write down the value in millibarns (mb).
- Multiply that value by the factor 1e+21.
- The product is the equivalent value in sheds (shed).
- To reverse, multiply the shed value by 1e-21.
Worked examples
Example 1 — Convert 1 mb to shed:
1 × 1e+21 = 1e+21 shed
Example 2 — Convert 100 mb to shed:
100 × 1e+21 = 1e+23 shed
Real-world example — Molecular dimensions
The diameter of small molecular structures (around 2 millibarns) is often converted into related sub-micron units when comparing measurements across different microscopy techniques or imaging modalities.
2 mb × 1e+21 = 2e+21 shed
Real-world example — Wavelengths across the spectrum
Optical and atomic-scale phenomena are routinely cross-converted between sub-micron units. A photon of wavelength 800 millibarns can be re-expressed in sheds for direct comparison with another instrument's calibration data sheet.
800 mb × 1e+21 = 8e+23 shed
Millibarn to Shed conversion table
Standard reference values for converting millibarns to sheds:
| Millibarn [mb] | Shed [shed] |
|---|---|
| 0.01 | 1e+19 |
| 0.1 | 1e+20 |
| 1 | 1e+21 |
| 2 | 2e+21 |
| 3 | 3e+21 |
| 4 | 4e+21 |
| 5 | 5e+21 |
| 10 | 1e+22 |
| 20 | 2e+22 |
| 30 | 3e+22 |
| 40 | 4e+22 |
| 50 | 5e+22 |
| 100 | 1e+23 |
| 500 | 5e+23 |
| 1000 | 1e+24 |
Frequently asked questions
How many sheds is 1 millibarn?
How do I convert millibarns to sheds?
How do I convert sheds back to millibarns?
How many sheds is 100 millibarns?
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Sources & references
Conversion factor (1 mb = 1e+21 shed) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.