Convert Microjoules to Attojoules
Convert Microjoules (µJ) to Attojoules (aJ) instantly and accurately.
Conversion Formula
aJ = µJ × 1000000000000
About Microjoules
A microjoule (µJ) is 10⁻⁶ J - the scale of precision laser ablation, ESD damage events, and individual LIDAR pulses. LASIK eye surgery delivers 0.5-2 µJ per pulse at 193 nm, ablating ~0.25 µm of corneal tissue per pulse. ESD events that destroy IC gates correspond to 1-1,000 µJ; the Human Body Model test discharges ~500 µJ at 2 kV. Q-switched microchip laser pulses for rangefinding are 1-100 µJ. The kinetic energy of a 1 mg grain of sand falling 10 cm is mgh ≈ 0.98 µJ. 1 µJ = 10⁻⁶ J.
About Attojoules
An attojoule (aJ) is 10⁻¹⁸ J - the scale of individual X-ray photons and superconducting qubit circuits. A 1 keV X-ray photon carries 160 aJ; a visible green photon (~550 nm) carries ~0.36 aJ. Josephson junction energies in superconducting qubits are set in tens to hundreds of aJ to achieve quantum coherence at millikelvin temperatures. XRISM's cryogenic TES X-ray spectrometer resolves individual photon energies at the hundreds-of-aJ level with ~7 eV FWHM resolution. 1 aJ = 10⁻¹⁸ J = 6.242 eV.
Quick Reference Table
| Microjoules (µJ) | Attojoules (aJ) |
|---|---|
| 1 µJ | 1 × 1012 aJ |
| 2 µJ | 2 × 1012 aJ |
| 5 µJ | 5 × 1012 aJ |
| 10 µJ | 1 × 1013 aJ |
| 25 µJ | 2.5 × 1013 aJ |
| 50 µJ | 5 × 1013 aJ |
| 100 µJ | 1 × 1014 aJ |