Paradigms Lost Tackling The Unanswered Mysteries Of Modern Science John L. Casti Avon Books

Paradigms Lost Tackling The Unanswered Mysteries Of Modern Science John L. Casti Avon BooksThis book is in very good condition though the cover has a nick or two. The spine has a crease but is otherwise in fine shape with no loose pages. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO $250 IN VALUE. IF AN ITEM IS MARKED "DELIVERED," AND YOU HAVE NOT ACTUALLY RECEIVED IT, THE FIRST STEP IS FOR YOU TO CONSULT YOUR MAIL CARRIER TO GET THE EXACT COORDINATES OF THE

It has an engraved / stamped base

It has terrific flashing

Tube Three measured 70/70 where minimum (65%) is 50/50 and 100% is 77/77

Plate current measured 20

Tube One's centering pin is missing and it has been marked for safe and easy insertion

It measured 49/47 where minimum (65%) is 40/40 and 100% is 62/62

new in box Amperex World 1BC2 / 1BC2A tubes tested to spec on our TV7

Transconductance measured 2220 micromhos for Tube One and 2460 for Tube Two

These US-made 12SF7 tubes were tested on our Paul Hart-calibrated TV7 for shorts

This assortment of five new old stock

a K2 date codes

They measured 28/30