Barn to Square Dekameter Converter
Unit Converter
Instant · Precise · Universal
23 units available
6 categories total
How to Convert Barn to Square Dekameter
To convert barns to m²: multiply by 10⁻²⁸. To fm²: multiply by 100.
1 b = 10⁻²⁸ m² = 100 fm². Millibarns (mb), microbarns (µb), and nanobarns (nb) are common submultiples.
For example, 1 Barn (b) = 1.000000e-30 Square Dekameter (dam²).
Barn to Square Dekameter — Common Values
| Barn (b) | Square Dekameter (dam²) |
|---|---|
| 0.1 | 1.000000e-31 |
| 0.5 | 5.000000e-31 |
| 1 | 1.000000e-30 |
| 2 | 2.000000e-30 |
| 5 | 5.000000e-30 |
| 10 | 1.000000e-29 |
| 25 | 2.500000e-29 |
| 50 | 5.000000e-29 |
| 100 | 1.000000e-28 |
| 500 | 5.000000e-28 |
| 1000 | 1.000000e-27 |
About Barn (b)
Definition
The barn is a unit of area equal to 10⁻²⁸ m², used to express nuclear cross-sections — the effective target area of subatomic particles.
Mathematical Relationship
1 b = 10⁻²⁸ m² = 100 fm². Millibarns (mb), microbarns (µb), and nanobarns (nb) are common submultiples.
Conversion Formula
To convert barns to m²: multiply by 10⁻²⁸. To fm²: multiply by 100.
Practical Applications
Quantifying nuclear reaction probabilities, neutron absorption, and particle scattering in reactor design.
Interesting Facts
The physicists named it 'barn' as a joke: nuclei were 'as big as a barn' compared to what they expected. Later units include 'outhouse' (10⁻⁶ barns) and 'shed' (10⁻²⁴ barns).
Common Mistakes
Thinking a barn is a large area — at the human scale 10⁻²⁸ m² is incomprehensibly small.
Educational Tips
Cross-section = probability of interaction. A bigger barn value means a particle is more likely to 'hit the target' — hence the barn analogy.
About Square Dekameter (dam²)
Definition
The square dekameter is a metric unit of area equal to 100 square meters, also known as an 'are'.
Mathematical Relationship
1 dam² = 100 m² = 1 are = 0.01 ha = 0.001 hm².
Conversion Formula
To convert dam² to m²: multiply by 100. To hectares: divide by 100.
Practical Applications
Occasionally used for small land parcels in European property descriptions.
Interesting Facts
The 'are' is one of the few metric units that's almost completely obsolete — even the hectare (which means '100 ares') overshadowed it.
Common Mistakes
Confusing dam² (square dekameter, 100 m²) with dm² (square decimeter, 0.01 m²) — they differ by a factor of 10,000.
Educational Tips
Think: 1 are = 10 m × 10 m = 100 m². A hectare = 100 ares. The 'hect-' prefix means 100.