Portable thunderstorm eyed to unlock rain making secrets
Scientists unveil a portable thunderstorm on wheels to study lightning and rain formation. Experiments show rain drops form around dust and ions in supersaturated air, with high voltage discharges triggering condensation and droplets.
MENTIONED IN THIS ARTICLE
Charles T. Knipp
Department of Physics
University of Illinois
Prof. Knipp
Professor Knipp
Knipp
Lead Carving as New Hobby For Amateur Sculptors
A historical guide explains lead carving as an easy, reusable craft. It details inexpensive materials from plumbers scraps, basic tools, and step by step projects such as carving a domino and a door knocker with smooth finishing and optional aluminum imitation.
Road Barrier at Grade Crossing Improves Safety
John D. Bundy of De Kalb Texas invents a barrier that forces drivers to stop look and listen before crossing rails. Straw picket fences create pockets on both sides with detours guiding motorists through a restricted passage and back to cross safely. Gates on cross fences remain locked but can be opened by officials.
MENTIONED IN THIS ARTICLE
Ings
John D. Bundy
de Kalb
Texas
Giant Jamaican tree frog roars like wild lion in forest
Field notes recount Emmett Reid Dunn’s Jamaica expedition seeking the elusive Hyla lichenata. He and a local boy cut through tangles of parastic pines collecting specimens while describing a pale yellowish green frog with a dark eye bar and a pointed snout and a second blackish frog living among the wild pines.
MENTIONED IN THIS ARTICLE
Jamaica
Hanover
Bluefields
Emmett Reid Dunn
Nature Magazine
Barbour
Harvard
Why the Top of a Map Is North
The article surveys historical map orientation alternating sides over eras, noting early maps often placed east or south, with Ptolemy favoring north. It explains Renaissance and 16th century shifts toward north-up due to meridians, globals showing northern landmass, and standard modern practice.
MENTIONED IN THIS ARTICLE
American Geographical Society
Christendom
Garden of Eden
British Museum
Germany
Nome
Ptolemy
Alexandria
Aring
British Isles
Matthew Paris
Novel Use of Wireless Waves to Preserve Milk
Vienna scientist Professor Siedel reports that high frequency wireless waves can sterilize and keep warm milk fresh and sweet for a month. The method could extend to other foods and may grow into commercial use, especially in hot weather.
MENTIONED IN THIS ARTICLE
Siedel
Vienna
Also Mentioned on This Page
Victor Rubin
Jwaterswapt
Earth