Bond / Eötvös number

Code snippets

curl "https://api.oanor.com/weber-api/v1/bond" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/weber-api/v1/bond", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/weber-api/v1/bond");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/weber-api/v1/bond",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Bo = Eo = Δρ·g·L²/σ — ratio of gravity to surface tension. Bo≪1: surface tension dominates and drops are spherical; Bo≫1: gravity flattens them. The capillary length is √(σ/(Δρ·g)).",
        "inputs": {
            "length": 0.002,
            "density": 1000,
            "gravity": 9.80665,
            "surface_tension": 0.0728
        },
        "bond_number": 0.53882692,
        "eotvos_number": 0.53882692
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:27.849Z",
        "request_id": "42690dfc-4f41-4c2d-8e68-e874839faf29"
    },
    "status": "ok",
    "message": "Bond/Eotvos number",
    "success": true
}