nano is 1/1,000,000,000 and pico is 1/1,000,000,000,000
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No, nano is larger than pico. In the International System of Units (SI), nano (symbol: n) represents 10^-9 (0.000000001), while pico (symbol: p) represents 10^-12 (0.000000000001).
"Micro micro" was an older designation used for a metric prefix that is now known as the prefix "pico," which represents one trillionth (1/1,000,000,000,000). The use of "micro micro" was eventually replaced by the standardized SI prefixes to avoid confusion.
The root word of "nano" is the Greek word "nanos," which means dwarf or small.
'Nano' is not a noun; 'nano' is not even a word, it is a prefix meaning 'one billionth' or used informally as an extremely small part of a whole. Some words with the prefix nano- are nanosecond, nanotechnology, or nanoscale.
The prefix "pico-" denotes a factor of 10^-12, meaning one trillionth (1/1,000,000,000,000) of a unit. It is commonly used in scientific contexts to indicate very small measurements.
"Henki nano" does not have a literal meaning in Japanese. It is a phrase commonly used in anime and manga to express surprise, confusion, or disbelief. It is often translated as "What on earth?" or "What the heck?" in English.