Study of Stormglass

under construction


Some examples of our observations from last times:
It was on summer day in August. One day, there was only crystaline mass on the bottom of the Stormglass and next day I observed almost 2 cm high crystals – the temperature of the place was still konstant! The weather changed second day after growth of the crystals, from sunshine to little more cloudy – was this indicated by the Stormglass? I do not know...try to monitor the behaviour of your glass and sometimes you will be maybe surprised what you will observe.
In winter time 2008, one day I obsereved appearance of dots and stars in clear liquid above crystals. Next day was snowing! The temperature was before appearance of the stars and in the time of appearance same, 18 °C. This phenomenon can not be generalized and I am not able to explain what influenced the sudden appearance of the stars in the liquid.


Snowfall efect

The Stormglass, as the only instrument, is able to simulate real snowfall - formation of crystaline nucleuses which gradually increase the volume till start slowly sediment in form small "snow flakes". This breathtaking effect strongly depends on temperature changes, in the other words, on termal gradient in which the Stormglass cool down. The gradient starts approximately at 25 - 30 °C and finish somewhere at 20 - 22 °C.
What is necessary to do:
1) Heating of the Stormglass approximately to 40 °C till all crystals will not dissolve. This can be done by means of warm water (part of glass ampoule is immersed and time to time shaked) or by hair-dryer under shaking with the glass – it takes about 1-3 minutes depends on temperature of the water. Do not use boiling water or so hot water where you can not immerse your hand!
2) Place the Stormglass somewhere with temperature around 18 - 25 °C.
And then only wait. Within 10-20 minutes (maybe little earlier or later) you will see the formation of small dots. The dots will gradually increase bulk and shape. You will have opportunity to observe squares and stars...and snowfall effect begins. The duration of the effect is approximately 20-30 minutes, and the effect ends when the Stormglass is almost filled with crystaline „snow“. Sometimes you can observe the growth of the crystaline leafs down from the liquid level!
The all procedure can be repeated endlessly!
The snowfall efect can occur in two types. The first - "snowing" and the second is called "nascent crystals".

1. Type - snowing

This is more frequent way, imitates typical winter's snowing, when many small crystaline dots are formed and slowly sediments like a snow flakes. You can see small crystals like star, cross or square.



2. Type - "nascent crystals"


The second way, more difficult to achieve, was named "Nascent crystals". In this case, one or few crystaline nucleus is formed under slow increasing of the volume. In certain time it looks, that the crystals levitate in the solution. When reach the sufficient bulk (3-5 mm), usually of shape of square or star, they slowly sediment. Most frequently, this course is accompanied by growth of the crystals from bottom (pictures 3-5). Typical shape of such crystals is shape of leaves.

When „snow-fall“ effect is finished, the Stormglass will be filled with white precipitate. Somethimes the precipitate can float. Let it stand over night. In case that the precipitate will not sediment, shake gently next day with Stormglass – air bubbles will be released from the precipitate and precipitate starts sediment. Then, it can take several days, then new crystals start to grow. If the Stormglass will be placed in colder place 18°C and less, next day you will be surprised with new crystals!

The following pictures show the snowfall efect in Stormglasses of various shapes - cylindrical, spherical and flat.









Graduall growth of the crystals inside combined Stormglass

Following pictures 1-3 illustrates development of the crystals in combined Stormglass flat(diameter 80mm)-spherical (diameter 50mm).
The first day No.1; the second day No.2; the thirdt day No.3, temperature fluctuated in range 20-22°C.



Shapes of ampoules

the following category is divided according shapes of the ampoules of the Stormglass. For each type, observed crystals are represented.


Cylindrical Stormglass


Spherical Stormglass


Flat Stormglass


Angular Stormglass


Drop-shaped Stormglass