Leavened and unleavened bread are nutritionally similar. Leavened bread contains baking yeast, baking powder or baking soda – ingredients that cause the dough to bubble and rise and create a light, airy product. Unleavened bread is a flatbread, often resembling a cracker.
Unleavened breads have symbolic importance in Judaism and Christianity.
Jews consume unleavened breads such as matzo during Passover as commanded in Exodus 12:18.
Per the Torah, the newly emancipated Israelites had to leave Egypt in such a hurry that they could not so much as spare time for their breads to rise, as such, bread which cannot rise is eaten as a reminder.
Canon Law of the Latin Rite of the Roman Catholic Church mandates the use of unleavened bread for the Host, and unleavened wafers for the communion of the faithful.
The more liturgical Protestant churches tend to follow the Latin Catholic practice, whereas others use either unleavened bread or wafers or ordinary (leavened) bread, depending on the traditions of their particular denomination or local usage.
On the other hand, mostEastern Churches explicitly forbid the use of unleavened bread (Greek: azymos artos) for the Eucharist.
''Eastern Christians associate unleavened bread with the Old Testament and allow only for bread with yeast, as a symbol of the New Covenant in Christ's blood.''
Indeed, this usage figures as one of the three points of contention that traditionally accounted for causes (along with Petrine supremacy and the filioque in the Niceno-Constantinopolitan Creed) of the Great Schism of 1054 between Eastern and Western churches.[1]
https://en.wikipedia.org/wiki/Unleavened_bread
https://en.wikipedia.org/wiki/Warp_drive#Original_warp_scale_(The_Original_Series,_The_Animated_Series,_Enterprise,_and_Discovery)
The warp drive velocity in Star Trek is generally expressed in "warp factor" units, which—according to Star Trek Star Fleet Technical Manual—corresponds to the magnitude of the warp field.
Achieving warp factor 1 is equal to breaking the light barrier, while the actual velocity corresponding to higher factors is determined using an ambiguous formula. According to the Star Trek episode writer's guide for The Original Series, warp factors are converted to multiples of the speed of light by multiplication with the cubic function of the warp factor itself.
Accordingly, "warp 1" is equivalent to the speed of light,
"warp 2" is eight times the speed of light,
"warp 3" is 27 times the speed of light, etc.
Several episodes of The Original Series placed the Enterprise in peril by having it travel at high warp factors. However, the velocity (in present dimensional units) of any given warp factor is rarely the subject of explicit expression, and travel times for specific interstellar distances are not consistent through the various series.
In The Original Series, warp factor 6 was established as the common speed of the USS Enterprise NCC-1701.
In some cases, the starship traveled at warp 7 or above, but with risk of damaging the ship or the engines.
Warp 9 in The Original Series was the "never exceed" speed for the hulls and engines of Constitution-class starships, equivalent to the aircraft VNE V-speed.
Warp 6 was the VNO "Normal Operation" maximum safe cruising speed for that vessel class.[12]
Only five stories in the original Star Trek series involved the Enterprise traveling beyond warp 9.
In each instance, it was a result of the influence of alien beings or foreign technology.
The warp 14.1 incident in That Which Survives was the result of runaway engines which brought the hull within seconds of structural failure before power was disengaged.[13]