What is a sidereal second?

A sidereal second is a time unit equal to 1/86,400 of a sidereal day, based on Earth's rotation relative to fixed stars, and is slightly shorter than the SI second.

Why is the shake unit used?

The shake measures very short time intervals of about 10 nanoseconds and is primarily used in nuclear physics to describe prompt events and short delay timings.

Can this converter be used for precision timing in general?

While useful for bridging astronomical and nanosecond timing, users should consider the slight difference between sidereal and SI seconds and the informal nature of the shake unit when precise accuracy is required.

How to Convert from Second (sidereal) to Shake?

Convert sidereal seconds to shakes using this easy-to-use online time unit converter. Translate astronomical timing intervals into nanosecond-scale durations relevant in nuclear physics and high-speed experiments.

Second (sidereal)

Shake

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Second (sidereal) to Shake Conversion Table

Second (sidereal)	Shake

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Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Second (sidereal) to Shake Conversion Table
Second (sidereal)	Shake

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What Is This Tool?

This tool converts time measurements from sidereal seconds—used in astronomy and Earth's rotation calculations—into shakes, an informal unit used mainly in nuclear physics for very short time intervals.

How to Use This Tool?

Enter the value in sidereal seconds that you want to convert
Select 'second (sidereal)' as the input unit and 'shake' as the output unit
Click the convert button to get the equivalent time in shakes
Review the conversion result and use it for your specific timing requirements

Key Features

Converts sidereal seconds to shakes with a clearly defined conversion rate
Supports timing applications from astronomy to nuclear physics and experimental electronics
Browser-based and straightforward interface for quick conversions
Includes examples demonstrating the conversion process
Useful for bridging time measures between long astronomical intervals and nanosecond-scale events

Examples

2 second (sidereal) equals 199,453,912.037036 shakes
0.5 second (sidereal) converts to 49,863,478.009259 shakes

Common Use Cases

Calculating sidereal time for star tracking and astronomical coordinate adjustments
Setting telescope tracking speeds for following celestial objects precisely
Timing short intervals in nuclear detonation event sequencing and reactor physics
Describing prompt-neutron lifetimes and high-speed experimental physics measurements
Correlating long astronomical time spans with nanosecond resolution needed in electronics

Tips & Best Practices

Understand the difference between sidereal and SI seconds when precise timing is needed
Use this converter to translate between large astronomical time units and extremely brief intervals carefully
Apply the results in contexts where nanosecond-level timing is relevant, like nuclear physics
Remember that the shake is an informal unit mainly for specialized fields, not an official SI unit

Limitations

Sidereal second differs slightly from the international second based on Earth's rotation relative to stars
Shake is not an officially recognized SI unit and is used informally in niche applications
Converting between vastly different timescales may be unintuitive and requires contextual understanding

Frequently Asked Questions

What is a sidereal second?: A sidereal second is a time unit equal to 1/86,400 of a sidereal day, based on Earth's rotation relative to fixed stars, and is slightly shorter than the SI second.
Why is the shake unit used?: The shake measures very short time intervals of about 10 nanoseconds and is primarily used in nuclear physics to describe prompt events and short delay timings.
Can this converter be used for precision timing in general?: While useful for bridging astronomical and nanosecond timing, users should consider the slight difference between sidereal and SI seconds and the informal nature of the shake unit when precise accuracy is required.

Key Terminology

Sidereal Second: A time unit equal to 1/86,400 of a sidereal day, based on Earth's rotation relative to distant celestial objects.
Shake: An informal time unit of 10 nanoseconds used in nuclear physics and engineering to describe very brief intervals.
Sidereal Day: The interval of one Earth rotation relative to the fixed stars or vernal equinox, different from a solar day.

Quick Knowledge Check

What does a sidereal second measure?

A unit based on Earth's rotation relative to the Sun

A unit based on Earth's rotation relative to fixed stars

A standardized SI second

What is the approximate duration of a shake?

10 seconds

10 nanoseconds

10 microseconds

In which field is the shake unit mainly used?

Astronomy

Nuclear physics

General electronics

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