Custom Search
Over 9,000 pages indexed!
Your Host
Click here to read about RF CafeKirt
Blattenberger

... single-handedly
redefining what an
engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5CCG (5th MOB):
My USAF radar shop

Hobby & Fun

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding business website - lots of info

Doggy Dynasty:
My son-in-law's dog training business

•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<
Job Board
About RF Cafe©
RF Cafe E-Mail
Product & Service
Directory
Engineering
Jobs
Personally Selected
Manufacturers
Employers Only
(no recruiters)

Tech Smorgasbord Archives - 10

These items are an archive of past Topical Smorgasbord items that have appeared on the RF Cafe homepage. In keeping with the "cafe" genre, these tidbits of information are truly a smorgasbord of topics. They all pertain to topics that are related to the general engineering and science theme of RF Cafe.

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 | 31 | 32 | 33 | 34 | 35 |

Please send me an e-mail if you have a good subject.







1/2 the World's
New Buildings
are Built in China

(source: Popular Science, 8/07)

China has built the equivalent of the U.S. highway system in a decade, and has surpassed the U.S. to become the world's #1 emitter of green house gases. By 2025, 400M Chinese will move from the countryside to the cities - the largest migration in world history. China is seeing a 10% increase in GDP each year - 2x that of the U.S. during the DotCom boom. It adds the electricity use of Norway to its grid every year. China last year produced 2.3B tons of coal, more than the U.S. and Russia combined. China made 8% of world's emissions in 1980, up to 18% by 2004. It is home to 7 of the world's 10 dirtiest metropolises.

 

Top Countries for Cybercrime - 2007
(source: Forbes)

1United States
2China
3Brazil
4Russia
5Sweden
6Ukraine
7U.K.
8India
9Germany

Gadgets Taken on Vacation this Summer
(source: Electronics Design)

Cellphone31%
Laptop Computer17%
iPod/MP3 Player12%
GPS Device11%
BlackBerry2%
Portable DVD Player1%

Sorry folks, but Labor Day is here and summer is now over.


 

Science & Engineering Ph.Ds Awarded in 2005
(source: Popular Science)

26.5%

Biological / Agricultural

22.9%

Engineering

14.8%

Social Sciences

13.0%

Physical Sciences

11.9%

Psychology

8.4%

Mathematics / Computer Sciences

2.5%

Earth, Atmospheric and Ocean Sciences

Fly Nepal Airlines...
and Leave the Sacrificing to Us
(source: AirWise News)

Officials at Nepal Airlines, Nepal's state-run airline, have sacrificed two goats to appease Akash Bhairab, the Hindu sky god, following technical problems with one of its Boeing 757 aircraft.

The goats were sacrificed in front of the troublesome aircraft at Nepal's international airport in Kathmandu in accordance with Hindu traditions, an official said.

Everybody wins here: They avoid costly  maintenance procedures and pass the savings on to you.

10-1-2007

 

Windows Up or Down?

A study published by Duke Energy purports to put to rest the debate over whether it is more efficient to drive with your car windows down w/o the AC on, or to roll them up and run the AC.

The verdict:

AC off = better mileage

AC on = worse mileage

As with most rules of thumb, there are exceptions, like for highly streamlined sports cars whose aerodynamic efficiency depends on the total body configuration.

Top Social Networking Site Growth June 06-07
(source: Nielsen//NetRatings)

YouTube162%
Facebook110%
Six Apart TypePad54%
Myspace30%
Blogger30%
Win. Live Spaces8%
Classmates-1%
Yahoo! Groups-8%
MSN Groups-18%
AOL Hometown-32%

 

Think Your Electric Utility Bills Are Shocking?
(source: USA Today)

Following deregulation and lifting of rate freezes, one couple in St. Louis, IL, got a bill for $1,024.31, up from $172 a few months earlier. This is happening all over the country. Here are some recent rate increases:

StateChange from 2002 to 2006
Texas57.7%
Mass.55.6%
Conn.53.2%
Rhode I.47.9%
Florida36.8%
Delaware33.6%
D.C.23.8%
U.S. Avg.23.3%
It is a good thing for the bureaucrats that this is not figured into inflation numbers.

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

Smith Chart™ for Excel
Smith Chart™ for Visio
RF & EE Symbols Word
RF Stencils for Visio

A Disruptive Web Presence

Custom Search
Over 9,000 pages indexed!
Read About RF Cafe
Webmaster: Kirt Blattenberger
KB3UON

Product & Service Directory
Personally Selected Manufacturers

RF Cafe T-Shirts & Mugs
Calculator Workbook
RF Workbench
Please Support My Advertisers