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𰚼

cjk unified ideograph-306bc

Nebulium character

1725/4939

𰚼 is the Chinese character used for nebulium, a once-proposed element. Astronomers later traced the bright lines seen in nebulae to oxygen, making this a historical label, not a current element.

Text symbol

What 𰚼 means

It names nebulium, a proposed element inferred from nebular light. In 1864, William Huggins studied the Cat’s Eye Nebula, a cloud of gas in space, with a spectroscope—an instrument that separates light into colored lines. Two bright green lines matched no known elements, so he proposed they came from a new one.

In 1927, Ira Sprague Bowen showed the lines came from oxygen atoms missing two electrons.

Who writes 𰚼

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Questions people ask

1

Why does 𰚼 appear as a box?

If the active font lacks the glyph, the app may show a box; the underlying text can still hold 𰚼.

How to type or find 𰚼

Search it as
nebulium · yun · nebula
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 306BC, then AltX to get 𰚼.
Windows
⊞Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win .).
macOS
⌃Control+⌘Command+␣SpaceOpen the character viewer and search “cjk unified ideograph-306bc”.
Linux
⎈Ctrl+⇧Shift+UType 306bc, then Enter or Space.
HTML
𰚼
CSS
\306BC
𰚼 HTML entity
In HTML source, enter 𰚼 to display 𰚼.
Codes and encoding1 code points
HTML decimal
𰚼
HTML hex
𰚼
CSS content
content: "\306BC";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%B0%9A%BC
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

2

Chinese characters99,354 symbols

Chinese, Japanese & Korean121,370 symbols