They are called "Tefillin" ( תפילין) in Hebrew. The English term of "phylacteries",
which came to English from Ancient Greek, is usually seen as pejorative by Jews.
It is worth noting that all male Jews above the age of Bar Mitzvah use tefillin
when praying in the mornings on all non-festive days, not just Rabbis.
It is also worth noting that "Tefillin" ( תפילין) is a plural, because there are two
of them ... one on the forehead, and another on the biceps of the individual's
weaker arm.
The "black boxes" contain small rolled parchments, on which are written certain
paragraphs from Torah, including the commandment of Tefillin.
Tefillin
Tefillin (phylacteries). These have their source in Deuteronomy ch.6 and are worn during the morning prayers. Their purpose is to symbolically bind us to God and to remind us of the Exodus and the Torah (as is implicit in Exodus ch.13).
The black box in a plane is bright orange.
the "black box" is usually orange.
A Black Box was created in 1979-11.
The black box is usually red in colour.
Could be worn ball joints, worn steering linkages, worn/out of adjustment steering box and or worn/out of adjustment wheel bearings.
The Color of the Black Box on an Airplane is Orange!
the black box is in the tail of all public planes
Black Box - novel - was created in 1986.
The Black Box Revelation was created in 2005.
Black Box Recorder was created in 1998.