What are the signs for long and short vowels?

There aren't specific signs for long and short vowels in the way that there are signs for letters in sign language.

However, in the context of phonetics and phonology, we use different symbols to represent long and short vowels:

* Long vowels: Often marked with a colon ( : ) after the vowel symbol. For example:

* /ɑː/ for the long vowel sound in "father"

* /iː/ for the long vowel sound in "see"

* Short vowels: Typically represented with a single vowel symbol. For example:

* /ɑ/ for the short vowel sound in "cat"

* /ɪ/ for the short vowel sound in "sit"

In writing, long vowels are often indicated by:

* Double vowels: Like "ee" in "see" or "oo" in "moon"

* Adding an "e" at the end of a word: Like "make" or "name"

* Using a "y" at the end of a word: Like "cry" or "fly"

It's important to note that these are just conventions and there can be variations in how long and short vowels are represented depending on the specific system of writing or transcription being used.