Convert Year (Tropical) (y (tropical)) to Shake (shake) instantly.
About these units
Year (Tropical) (y (tropical))
The tropical year, about 365.24219 days, is the time it takes Earth to return to the same position relative to the vernal equinox. This is the year used to calibrate modern calendars because it governs the cycle of seasons. Precession of Earth's rotational axis causes slight variations in the tropical year, making it subtly different from the sidereal year. The tropical year is essential for determining solstices, equinoxes, and agricultural cycles. Modern calendar reform, leap-year algorithms, and astronomical computations rely heavily on this time unit. It reflects the delicate interaction between Earth's orbit and axial tilt.
Shake (shake)
A shake is a playful but scientifically important unit equal to 10 nanoseconds. It originated in the Manhattan Project, where physicists needed a convenient term for very short intervals in nuclear chain reactions. A nuclear fission event occurs on the order of a few shakes, making the unit ideal for modeling neutron capture, reaction propagation, and weapon physics. Today, the shake appears in nuclear engineering literature, plasma physics, and astrophysics—any field involving extremely rapid events. Despite its whimsical name, the shake represents a meaningful scientific compromise: short enough for nuclear events, yet still relatable and easy to calculate.