A Tunnel Across the English Channel? (Sep, 1936)

A Tunnel Across the English Channel?

Among the great technical projects of the future, the construction of a tunnel under the English Channel figures as one of the most probable. In fact, it appears so easy that one may even ask why it has not been done. In answer to that question, this inside story will be of interest.

Portable Unit Puffs Cereal Grains (Dec, 1936)

I’m kind of amazed I haven’t seen one of these still in use in Portland. It seems like artisanal breakfast cereal would be very popular here. Salted caramel hemp puffs anyone?

Portable Unit Puffs Cereal Grains

DESIGNED especially for light manufacturing, a new machine recently introduced by a Portland, Oregon, manufacturer

converts wheat and rice grains into a delightful breakfast cereal. Four quarts of dry grain when exploded makes about one bushel of breakfast food. The machine can be operated by one person and will produce $120 worth of merchandise per day. An electric motor operates the device.

Every Family.. should own.. this Newest, Greatest Encyclopaedia Britannica (Mar, 1930)

I wonder how people would have reacted if, just once, the family shown in the picture was Black or Asian. “Every Family with Children” is a pretty all encompassing statement.

Every Family with Children in it should own and can own this Newest, Greatest Encyclopaedia Britannica

Every family, and above all, every family with children in it, should own the great new Encyclopaedia Britannica— the one essential book for the home — the one work bringing to young and old the limitless advantages of modern knowledge.

Voltage of Sunset Is Large (May, 1930)

Don’t you need a source and drain to have a current? What are they in this case?

Voltage of Sunset Is Large
THE electric voltage of a sunset is 2000 volts higher than of a sunrise. Day and night three vast electric currents, like rapid tidal floods, rush around the spinning earth in layers of the air 80 or 90 miles above the ground.

Phono-Film Reel (Sep, 1936)

Phono-Film Reel

A very efficient and cheap new method of sound reproduction


AS shown by the great number of electrically transcribed programs on the radio, which gave such a setback to the phonograph industry, broadcasting even today relies to a considerable extent on mechanical sound recording.

Ancient Locks Portray Genius (Oct, 1937)

Ancient Locks Portray Genius

One of the finest collections of locks and keys in the whole world is owned, not by a collector of rarest objects, but by an internationally famous locksmith. It includes over four hundred of the most valued and historical locks in the world and completely depicts the evolution of some of the intricate devices developed by mechanics down through the ages.

DESIGN a voice command system with the Siliconix CODEC & WIN an Apple! (Jul, 1978)

DESIGN a voice command system with the Siliconix CODEC & WIN an Apple!

Enter the Siliconix CODEC Design Contest and win an Apple II — the world’s best-selling personal computer — or another great prize. All you have to do is use Siliconix’ CODEC to design a microprocessor-based system which responds to your spoken words (or talks back to you).

Photographic Record of Telephone Meters (Oct, 1937)

Photographic Record of Telephone Meters
INSTEAD of the usual method of reading and recording the number registered by your telephone meter, transferring this to the accounting department where the record is copied and tabulated and the bills are made out, the newest system consists of supplying a photographic record of your phone number and the meter reading with your bill.




VERY great banquet begins with turtle soup, so that the traffic in these curious creatures is naturally a very profitable one, though extremely precarious withal. In the first place, while there are a great variety of turtles in tropic waters, only one kind is of any use for the much-sought soup.

Fame and Fortune from Sandwiches (Sep, 1936)

Fame and Fortune from Sandwiches

The Sandwich King of Denmark and his two hundred varieties of Smoerrebroed.

THE proverb, “The way to a man’s heart lies through his stomach,” could well have originated in Denmark. The Danes love good food and, above all, they like their special sandwiches, called Smoerrebroed.