SQUARE RENTOGEN·U+3356

Character Information

Code Point
U+3356
HEX
3356
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E3 8D 96
11100011 10001101 10010110
UTF16 (big Endian)
33 56
00110011 01010110
UTF16 (little Endian)
56 33
01010110 00110011
UTF32 (big Endian)
00 00 33 56
00000000 00000000 00110011 01010110
UTF32 (little Endian)
56 33 00 00
01010110 00110011 00000000 00000000
HTML Entity
㍖
URI Encoded
%E3%8D%96

Description

The Unicode character U+3356 represents the "SQUARE RENTOGEN" symbol (㊥). This typographic entity is primarily used in digital text for its distinctive visual appearance, which consists of a hollow square enclosing a stylized gamma radiation symbol. The SQUARE RENTOGEN is often employed to denote radioactive materials or locations with high levels of ionizing radiation. Due to its unique shape and association with nuclear energy, the character has become a popular choice for science fiction and fantasy writers when describing dangerous substances or settings within their narratives. Although not widely used in everyday communication, the SQUARE RENTOGEN serves as an important symbol in certain technical, scientific, and creative contexts.

How to type the symbol on Windows

Hold Alt and type 13142 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+3356. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format: 1110xxxx 10xxxxxx 10xxxxxx
    Where the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+3356 to binary: 00110011 01010110. Those are the payload bits.

  3. Step 3: Fill in the bits to match the bit pattern:

    Obtain the final bytes by arranging the paylod bits to match the bit layout:
    11100011 10001101 10010110