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Motion and speed

Stalactite growth front

A stalactite growth front is the advancing tip of a stalactite, where mineral deposits accumulate as water drips in caves.

How big is it?

3 × 10⁻¹¹ m/s · speed

Speed · approximate
Typical recorded range: 3 × 10⁻¹² m/s to 3 × 10⁻¹⁰ m/s.

Scale illustration of a stalactite growth front, showing the recorded speed.
Recorded speed: 3 × 10⁻¹¹ m/s.

A little perspective

Stalactite growth front vs Tree trunk radial growth: speed comparison

The radial growth rate of a tree trunk is about 3.33 times the speed of a stalactite growth front.

Scale

DISTANCE IN ONE SECOND

Stalactite growth front

A stalactite growth front is the advancing tip of a stalactite, where mineral deposits accumulate as water drips in caves.

3 × 10⁻¹¹ m/sSpeed
0

30 pm in 1 s

Tree trunk radial growth

Tree trunk radial growth refers to the outward expansion of a tree's trunk as new layers of wood are added beneath the bark.

1 × 10⁻¹⁰ m/sSpeed
0

100 pm in 1 s

Each track shows distance covered in the same second. The small illustrations identify the movers; their sizes are schematic.
Measurements, assumptions & sources +

Stalactite growth front

Speed: 3 × 10⁻¹¹ m/s; approximate; range 3 × 10⁻¹² m/s–3 × 10⁻¹⁰ m/s.

A curated stalactite growth front comparison anchor. The representative value and any stated range preserve the backlog measurement convention; operating or experimental conditions can change real observations.

Defined examples — our methodology

The marked speed is calibrated. Unmeasured illustration details are representative.

Tree trunk radial growth

Speed: 1 × 10⁻¹⁰ m/s; approximate; range 1 × 10⁻¹¹ m/s–1 × 10⁻⁹ m/s.

A curated tree trunk radial growth comparison anchor. The representative value and any stated range preserve the backlog measurement convention; operating or experimental conditions can change real observations.

Defined examples — our methodology

The marked speed is calibrated. Unmeasured illustration details are representative.

Use the visual comparison to explore its scale, then check the measurements and sources.

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Why this measurement?

Why we use 3 × 10⁻¹¹ m/s

We compare the speed of a stalactite growth front. This is an estimate; check the notes for its rounding and uncertainty. The recorded range is 3 × 10⁻¹² m/s to 3 × 10⁻¹⁰ m/s.

A curated stalactite growth front comparison anchor. The representative value and any stated range preserve the backlog measurement convention; operating or experimental conditions can change real observations.

The picture identifies the subject; the diagram compares the recorded values. How calibrated comparisons work →

Explore motion and speed →

Recorded properties

Dimensions and measurements

PropertySelected valueRecorded rangeBasis
3 × 10⁻¹¹ m/s3 × 10⁻¹² m/s to 3 × 10⁻¹⁰ m/sapproximate

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Sources and method

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The source records and measurement method remain available for inspection.

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