- An
envelope is a
common packaging item,
usually made of thin, flat material. It is
designed to
contain a flat object, such as a
letter or card. Traditional...
- A red
envelope, red packet,
hongbao or ang pau (traditional Chinese: 紅包;
simplified Chinese: 红包; pinyin: hóngbāo; Pe̍h-ōe-jī: âng-pau) is a gift of money...
- The two
envelopes problem, also
known as the
exchange paradox, is a
paradox in
probability theory. It is of
special interest in
decision theory and for...
- A
green envelope (Malay:
sampul hijau or
sampul duit raya) is a
Malay adaptation of the
Chinese red
envelope custom.
During the
festival of Eid ul-Fitr...
- The
envelope system, also
known as the
envelope budgeting method or cash stuffing, is a po****r
method for
visualizing and
maintaining a
flexible budget...
- In
sound and music, an
envelope describes how a
sound changes over time. For example, a
piano key, when
struck and held,
creates a near-immediate initial...
- An
envelope detector (sometimes
called a peak detector) is an
electronic circuit that
takes a (relatively) high-frequency
amplitude modulated signal as...
- In geometry, an
envelope of a
planar family of
curves is a
curve that is
tangent to each
member of the
family at some point, and
these points of tangency...
- In
physics and engineering, the
envelope of an
oscillating signal is a
smooth curve outlining its extremes. The
envelope thus
generalizes the
concept of...
- In aerodynamics, the
flight envelope,
service envelope, or
performance envelope of an
aircraft or
spacecraft refers to the
capabilities of a
design in...
