Nu — ν Greek Letter Symbol
ν
Nu — ν / Ν
13th letter of the Greek alphabet · pronounced /njuː/
PhysicsFluid MechanicsMathematicsOptics
Copy symbol
ν
Lowercase nu
Ν
Uppercase Nu
Technical reference
| Unicode (lowercase) | U+03BD |
| Unicode (uppercase) | U+039D |
| HTML entity | ν |
| HTML decimal | ν |
| LaTeX | \nu |
| Python / Unicode escape | \u03bd |
| Alt code (Windows) | Alt + 957 |
Uses in science & engineering
Frequency
Number of occurrences of a repeating event per unit time. Used in physics and wave mechanics.
\(E = h\nu\)
Kinematic viscosity
Ratio of dynamic viscosity to fluid density. Key parameter in fluid flow and Reynolds number.
\(\nu = \frac{\mu}{\rho}\)
Poisson’s ratio
Ratio of transverse to axial strain when a material is stretched. Fundamental in structural analysis.
\(\nu = -\frac{\varepsilon_{\text{transverse}}}{\varepsilon_{\text{axial}}}\)
Neutrino (particle physics)
Symbol for the neutrino, a nearly massless fundamental particle.
\(n \rightarrow p + e^- + \bar{\nu}_e\)
Related symbols
How to insert in applications
Windows
Best option: copy from this page.
Or press Win + . to open emoji & symbols panel.
Alt codes work only in Word/Notepad with NumLock on and English layout — not in browsers.
Or press Win + . to open emoji & symbols panel.
Alt codes work only in Word/Notepad with NumLock on and English layout — not in browsers.
macOS
Press ⌃⌘Space → Character Viewer → search “nu”
Microsoft Word
Type 03bd then press Alt+X
Google Docs
Insert → Special characters → search by name
Excel
Insert → Symbol → Subset: Greek → select symbol
LaTeX
Use in math mode: $ … $
Python
Use Unicode escape or chr()
HTML / CSS
Use HTML entity or decimal code