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Snowflake Shape Predictability
Kirt's Cogitations™ #82

These original Kirt's Cogitations™ may be reproduced (no more than 5, please) provided proper credit is given to me, Kirt Blattenberger.

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   Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or
                                        reflection; meditation; contemplation.
   Kirt [kert] – proper noun: RF Cafe webmaster.


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Snowflake Shape Predictability

If you live or spend a lot of time where snow is commonplace, you have probably noticed that not all snow is the same. If you also suspected that temperature seemed to have some bearing on its texture, you were correct. Research has determined that snowflakes - crystals, actually - that form in temperatures between 27° F and 32° F, and between -13° F and 18° F are shaped like hexagonal plates. Those that form at and a little above 32° F are shaped like needles and columns. Familiar 6-armed snowflakes (technically called dendrites) form at temperatures between 3° F and 10° F. The formation temperature ranges are amazingly consistent, even in the presence of contaminants.

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

Smith Chart™ for Excel
Smith Chart™ for Visio
RF & EE Symbols Word
RF Stencils for Visio

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