
Scattered Light and The Raman Effect

Scattered Light and The Raman Effect

An Experiment in Suspended Gravitation
We May Reason Out One Kind of an Answer to a Question in Physics and Arrive at an Opposite Answer By Actual Experiment. Experiment Wins

Sounds that Burn
The Human Ear Senses No Vibrations Above 30,000 Per Second, but Inaudible Sounds at 300,000 Vibrations Per Second Perform Queer Antics

Monochromatic Photography of Jupiter and Saturn
Some Results of Experiments with Various Kinds of Ray Filters

On the Imprisonment of Radiation by Total Reflection, The World's Coal Supply

Photography By Invisible Light
Things we should see if our eyes were Sensitive to ultra-violet and infrared rays

The Moon in Ultra-Violet Light
A Peculiar Deposit Discovered on the Lunar Surface

Autograph of a Thunderbolt

Handy Man's Workshop
An Easily Constructed Equatorial Mount for Small Telescopes

The Mercury Telescope

The Optical Intensification of Paintings

The N-Rays: Arguments against their Existence

Solid Carbonic Acid from "Sparklets"

The Diffraction Process of Color Photography

An Induction Coil for Alternating Currents

A Hydrostatic Paradox

An Inexpensive Mercurial Air Pump