Category: Science

Sir Isaac Netwotn’s three laws of motion. Three states of matter (solid, liquid, gas). We live on the third rock from the sun. Our metric system of measurement uses metre, litre, and gram. Morse code is a reliable system as the signal is made up of only three parts – a long ‘on’, the dash; a short ‘on’, the dot; and an ‘off’ signal. Do you know what SOS means in Morse code?

Posted on by — Leave a comment

RCA – RADIO CLUB OF AMERICA

(Adapted from "The Twenty-fifth Anniversary Year Book", The Radio Club of America, Inc., 1934)

A HISTORY OF THE
RADIO CLUB OF AMERICA, Inc.
by: George E. Burghard

_________

The story of the Radio Club of America begins over a quarter of a century ago, during the really dark ages of the radio art, about 1907

Continue reading RCA – RADIO CLUB OF AMERICA

Posted on by — Leave a comment

The Sierpinski Triangle

The Sierpinski TriangleStep One Draw an equilateral triangle with sides of 2 triangle lengths each. Connect the midpoints of each side. How many equilateral triangles do you now have? Image Shade out the triangle in the center. Think of this as cutting a hole in the triangle. Image Continue reading The Sierpinski Triangle

Posted on by — Leave a comment

The KnotPlot Site – trefoil

Trefoil Knot“Here you will find a [browsable] collection of knots and links, viewed from a (mostly) mathematical perspective. Nearly all of the images here were created with KnotPlot, a fairly elaborate program to visualize and manipulate mathematical knots in three and four dimensions.” The diagrams are in color and are exceptionally clear.

Continue reading The KnotPlot Site – trefoil