Showing posts with label Science and Technology. Show all posts
Showing posts with label Science and Technology. Show all posts

Tuesday, September 20, 2011

A little history thanks to Phil....

Can you believe it? They don't mention remote ops!

Monday, October 12, 2009

The First Tube

Audion

De Forest Audion from 1906.De Forest had an interest in wireless telegraphy and he invented the Audion in 1906. He then developed an improved wireless telegraph receiver. At that time, he was a member of the faculty at the Armour Institute of Technology, now part of the Illinois Institute of Technology.

In January 1907, De Forest filed a patent for a two-electrode device for detecting electromagnetic waves, a variant of the Fleming valve invented two years earlier, a.k.a. the diode vacuum tube detector. It was granted US Patent 879,532 in February 1908. It was a three-electrode device (plate, cathode, control grid), was a vacuum tube. It was also called the De Forest valve, and since 1919 has been known as the triode. De Forest's innovation was the insertion of a third electrode, the grid, in between the cathode (filament) and the anode (plate) of the previously invented diode. The resulting triode or three-electrode vacuum tube could be used as an amplifier for electrical signals, notably for radio reception. The Audion could also act as a fast (for its time) electronic switching element, later applicable in digital electronics (such as computers). The triode was vital in the development of long-distance (e.g. transcontinental) telephone communications, radio, and radar. The triode was an important innovation in electronics in the first half of the 20th century, between Nikola Tesla's and Guglielmo Marconi's progress in radio in the 1890s, and the 1948 invention of the transistor.

De Forest had, in effect, stumbled onto this invention via tinkering and did not completely understand how it worked. De Forest had initially claimed that the operation was based on ions created within the gas in the tube when, in fact, it was shown by others to operate with a vacuum in the tube. The American inventor Irving Langmuir of General Electric Corp. was the first to correctly explain the theory of operation of the device, and also to significantly improve it.

First broadcastIn 1904, a De Forest transmitter and receiver were set up aboard the steamboat Haimun operated on behalf of The Times, the first of its kind. [3] On July 18, 1907, De Forest broadcast the first ship-to-shore message from the steam yacht Thelma. The communication provided quick, accurate race results of the Annual Inter-Lakes Yachting Association (I-LYA) Regatta. The message was received by his assistant, Frank E. Butler of Monroeville, Ohio, in the Pavilion at Fox's Dock located on South Bass Island on Lake Erie. DeForest disliked the term "wireless", and chose a new moniker, "radio". De Forest is credited with the birth of public radio broadcasting when on January 12, 1910, he conducted experimental broadcast of part of the live performance of Tosca and, the next day, a performance with the participation of the Italian tenor Enrico Caruso from the stage of Metropolitan Opera House in New York City.[4] [5].



Sunday, October 4, 2009

Monday's Sunami as Recorded on Lookout Mountain


The vertical axis is hours in 15 min increments. 

The horizontal axis is time in minutes from 00 to 15.

Tuesday, June 9, 2009

DSL Stats


Current Modem Log

Diagnostics Log
CURRENT MODEM STATUS
DSL Modem Status........... Up
PPP Session Status......... Up
Connection Type............ PPPoE
Time set from.............. Daylight Savings
Time since last boot....... 20 days, 2 hrs: 25 mins: 18 secs
Time last modem self test.. WED AUG 20 20:53:50 2008

Time last modem result.... PASS
EVENTS
**********************************************************************
Events are listed starting from the most recent.
**********************************************************************
FRI JUN 05 23:00:21 2009
CWMP: Final Http Return Code = 0
FRI JUN 05 23:00:21 2009
CWMP: Inform (0). The following events are true: 1 BOOT
FRI JUN 05 23:00:21 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
MON JUN 01 00:30:43 2009
Auto Calendar Upgrade check performed, no upgrade required (3)
SAT MAY 30 09:55:21 2009
CWMP: Final Http Return Code = 0
SAT MAY 30 09:55:21 2009
CWMP: Inform (0). The following events are true: 1 BOOT
SAT MAY 30 09:55:21 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
SAT MAY 30 09:33:23 2009
Setting System clock to Daylight Savings Time SAT MAY 30 09:33:23 2009
SAT MAY 30 09:33:23 2009
Time set from Primary SNTP server: tock.usno.navy.mil
SAT MAY 30 09:33:21 2009
PPP CONNECTED on VPI 8 VCI 35
SAT MAY 30 09:33:21 2009
Connecting session(0): Auto Registration due to AutoConnect request
SAT MAY 30 09:33:19 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
SAT MAY 30 09:33:17 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=12)
SAT MAY 30 09:33:16 2009
Disconnecting session(0): Auto Registration due to PADT received
SAT MAY 30 09:33:16 2009
Received PADT for session id 17528
SAT MAY 30 09:33:16 2009
PPP DISCONNECTED on VPI 8 VCI 35 : PPP commanded down
SAT MAY 30 09:33:16 2009
Disconnecting session(0): Auto Registration due to dsl Restart
SAT MAY 30 09:33:15 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=9)
SAT MAY 30 09:33:11 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=6)
SAT MAY 30 09:33:07 2009
US Atten: 16.0 DS Atten: 23.0
SAT MAY 30 09:33:07 2009
US Margin: 12.0 DS Margin: 14.0
SAT MAY 30 09:33:07 2009
US Tx Power: 1.4 DS Tx Power: 19.7
SAT MAY 30 09:33:07 2009
US DSL Rate: 512 kbits/sec DS DSL Rate: 8128 kbits/sec
SAT MAY 30 09:33:07 2009
WanMgr reports DSL is UP
SAT MAY 30 09:33:05 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
SAT MAY 30 09:32:47 2009
WanMgr reports DSL is Down
FRI MAY 29 19:57:55 2009
Setting System clock to Daylight Savings Time FRI MAY 29 19:57:53 2009
FRI MAY 29 19:57:55 2009
Time set from Primary SNTP server: tock.usno.navy.mil
FRI MAY 29 19:57:53 2009
PPP CONNECTED on VPI 8 VCI 35
FRI MAY 29 19:57:53 2009
Connecting session(0): Auto Registration due to AutoConnect request
FRI MAY 29 19:57:48 2009
Disconnecting session(0): Auto Registration due to PADT received
FRI MAY 29 19:57:48 2009
Received PADT for session id 20089
FRI MAY 29 19:57:48 2009
PPP DISCONNECTED on VPI 8 VCI 35 : PPP commanded down
FRI MAY 29 19:57:48 2009
Disconnecting session(0): Auto Registration due to dsl Restart
FRI MAY 29 19:57:47 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
FRI MAY 29 19:57:39 2009
US Atten: 16.0 DS Atten: 23.0
FRI MAY 29 19:57:39 2009
US Margin: 12.0 DS Margin: 15.0
FRI MAY 29 19:57:39 2009
US Tx Power: 1.4 DS Tx Power: 19.7
FRI MAY 29 19:57:39 2009
US DSL Rate: 512 kbits/sec DS DSL Rate: 8128 kbits/sec
FRI MAY 29 19:57:39 2009
WanMgr reports DSL is UP
FRI MAY 29 19:57:19 2009
WanMgr reports DSL is Down
FRI MAY 29 03:52:41 2009
Auto Calendar Upgrade check performed, no upgrade required
WED MAY 27 03:09:38 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=18)
WED MAY 27 03:09:36 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=15)
WED MAY 27 03:09:30 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=12)
WED MAY 27 03:09:27 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=9)
WED MAY 27 03:09:17 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=6)
WED MAY 27 03:09:10 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
TUE MAY 26 17:01:55 2009
CWMP: Final Http Return Code = 0
TUE MAY 26 17:01:55 2009
CWMP: Inform (0). The following events are true: 1 BOOT
TUE MAY 26 17:01:55 2009
CWMP: TCP Not Connected, SSL Connection not requested, Auth Type = None
FRI MAY 22 17:48:44 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
FRI MAY 22 17:48:24 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
FRI MAY 22 17:48:06 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
FRI MAY 22 17:47:35 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
FRI MAY 22 13:51:30 2009
Setting System clock to Daylight Savings Time FRI MAY 22 13:51:21 2009
FRI MAY 22 13:51:30 2009
Time set from Primary SNTP server: tock.usno.navy.mil
FRI MAY 22 13:51:26 2009
PPP CONNECTED on VPI 8 VCI 35
FRI MAY 22 13:51:26 2009
Connecting session(0): Auto Registration due to AutoConnect request
FRI MAY 22 13:51:24 2009
Disconnecting session(0): Auto Registration due to PADT received
FRI MAY 22 13:51:24 2009
Received PADT for session id 20063
FRI MAY 22 13:51:24 2009
PPP DISCONNECTED on VPI 8 VCI 35 : PPP commanded down
FRI MAY 22 13:51:24 2009
Disconnecting session(0): Auto Registration due to dsl Restart
FRI MAY 22 13:51:22 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=9)
FRI MAY 22 13:51:19 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=6)
FRI MAY 22 13:51:15 2009
US Atten: 16.0 DS Atten: 23.0
FRI MAY 22 13:51:15 2009
US Margin: 12.0 DS Margin: 14.0
FRI MAY 22 13:51:15 2009
US Tx Power: 1.5 DS Tx Power: 19.7
FRI MAY 22 13:51:15 2009
US DSL Rate: 512 kbits/sec DS DSL Rate: 8128 kbits/sec
FRI MAY 22 13:51:15 2009
WanMgr reports DSL is UP
FRI MAY 22 13:51:15 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
FRI MAY 22 13:50:55 2009
WanMgr reports DSL is Down
THU MAY 21 16:34:57 2009
CWMP: Final Http Return Code = 0
THU MAY 21 16:34:57 2009
CWMP: Inform (0). The following events are true: 1 BOOT
THU MAY 21 16:34:57 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
THU MAY 21 10:55:56 2009
Setting System clock to Daylight Savings Time THU MAY 21 10:55:45 2009
THU MAY 21 10:55:56 2009
Time set from Primary SNTP server: tock.usno.navy.mil
THU MAY 21 10:55:52 2009
PPP CONNECTED on VPI 8 VCI 35
THU MAY 21 10:55:52 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
THU MAY 21 10:55:52 2009
Connecting session(0): Auto Registration due to AutoConnect request
THU MAY 21 10:55:51 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
THU MAY 21 10:55:51 2009
Disconnecting session(0): Auto Registration due to PADT received
THU MAY 21 10:55:51 2009
Received PADT for session id 19252
THU MAY 21 10:55:51 2009
PPP DISCONNECTED on VPI 8 VCI 35 : PPP commanded down
THU MAY 21 10:55:51 2009
Disconnecting session(0): Auto Registration due to dsl Restart
THU MAY 21 10:55:42 2009
US Atten: 16.0 DS Atten: 23.0
THU MAY 21 10:55:42 2009
US Margin: 12.0 DS Margin: 14.0
THU MAY 21 10:55:42 2009
US Tx Power: 1.5 DS Tx Power: 19.7
THU MAY 21 10:55:42 2009
US DSL Rate: 512 kbits/sec DS DSL Rate: 8128 kbits/sec
THU MAY 21 10:55:42 2009
WanMgr reports DSL is UP
THU MAY 21 10:55:23 2009
WanMgr reports DSL is Down
THU MAY 21 02:26:48 2009
CWMP: Final Http Return Code = 0
THU MAY 21 02:26:48 2009
CWMP: Inform (0). The following events are true: 1 BOOT
THU MAY 21 02:26:48 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
WED MAY 20 18:11:17 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=21)
WED MAY 20 18:11:10 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=18)
WED MAY 20 18:11:07 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=15)
WED MAY 20 18:11:06 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=12)
WED MAY 20 18:11:02 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=9)
WED MAY 20 18:10:56 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=6)
WED MAY 20 18:10:49 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
WED MAY 20 17:28:23 2009
Setting System clock to Daylight Savings Time WED MAY 20 17:28:11 2009
WED MAY 20 17:28:23 2009
Time set from Primary SNTP server: tock.usno.navy.mil
WED MAY 20 17:28:19 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=6)
WED MAY 20 17:28:19 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
WED MAY 20 17:28:19 2009
PPP CONNECTED on VPI 8 VCI 35
WED MAY 20 17:28:19 2009
Connecting session(0): Auto Registration due to AutoConnect request
WED MAY 20 17:28:16 2009
LAN PC unable to communicate with DNS Server.(error = 'connection refused', count=15)
WED MAY 20 17:28:16 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=12)
WED MAY 20 17:28:16 2009
Disconnecting session(-1): due to PADT received
WED MAY 20 17:28:16 2009
Received PADT for session id 19754
WED MAY 20 17:28:16 2009
PPP DISCONNECTED on VPI 8 VCI 35 : PPP commanded down
WED MAY 20 17:28:16 2009
Disconnecting session(0): Auto Registration due to dsl Restart
WED MAY 20 17:28:07 2009
US Atten: 16.0 DS Atten: 23.0
WED MAY 20 17:28:07 2009
US Margin: 12.0 DS Margin: 14.0
WED MAY 20 17:28:07 2009
US Tx Power: 1.6 DS Tx Power: 19.7
WED MAY 20 17:28:07 2009
US DSL Rate: 512 kbits/sec DS DSL Rate: 8128 kbits/sec
WED MAY 20 17:28:07 2009
WanMgr reports DSL is UP
WED MAY 20 17:28:04 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=9)
WED MAY 20 17:28:03 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=6)
WED MAY 20 17:28:02 2009
LAN PC unable to communicate with DNS Server.(error = 'connection timed out', count=3)
WED MAY 20 17:27:47 2009
WanMgr reports DSL is Down
WED MAY 20 15:04:25 2009
CWMP: Final Http Return Code = 0
WED MAY 20 15:04:25 2009
CWMP: Inform (0). The following events are true: 1 BOOT
WED MAY 20 15:04:25 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
WED MAY 20 13:09:19 2009
CWMP: Final Http Return Code = 0
WED MAY 20 13:09:19 2009
CWMP: Inform (0). The following events are true: 1 BOOT
WED MAY 20 13:09:19 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
WED MAY 20 11:22:53 2009
CWMP: Final Http Return Code = 0
WED MAY 20 11:22:53 2009
CWMP: Inform (0). The following events are true: 1 BOOT
WED MAY 20 11:22:53 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
WED MAY 20 08:52:23 2009
CWMP: Final Http Return Code = 401
WED MAY 20 08:52:23 2009
CWMP: Inform (401). The following events are true: 1 BOOT
WED MAY 20 08:52:23 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = Basic
WED MAY 20 07:27:04 2009
CWMP: Final Http Return Code = 0
WED MAY 20 07:27:04 2009
CWMP: Inform (0). The following events are true: 1 BOOT
WED MAY 20 07:27:04 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
WED MAY 20 07:19:33 2009
CWMP: Final Http Return Code = 0
WED MAY 20 07:19:33 2009
CWMP: Inform (0). The following events are true: 1 BOOT
WED MAY 20 07:19:33 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
WED MAY 20 07:09:32 2009
CWMP: Final Http Return Code = 0
WED MAY 20 07:09:32 2009
CWMP: Inform (0). The following events are true: 1 BOOT
WED MAY 20 07:09:32 2009
CWMP: TCP Connected, SSL Connection Succeeded, Auth Type = None
WED MAY 20 07:05:24 2009
Setting System clock to Daylight Savings Time WED MAY 20 07:05:11 2009
WED MAY 20 07:05:24 2009
Time set from Primary SNTP server: tock.usno.navy.mil
WED MAY 20 07:05:20 2009
PPP CONNECTED on VPI 8 VCI 35
WED MAY 20 07:05:20 2009
Connecting session(0): Auto Registration due to dsl Restart
WED MAY 20 07:05:04 2009
US Atten: 16.0 DS Atten: 22.5
WED MAY 20 07:05:04 2009
US Margin: 12.0 DS Margin: 16.0
WED MAY 20 07:05:04 2009
US Tx Power: 1.2 DS Tx Power: 19.7
WED MAY 20 07:05:04 2009
US DSL Rate: 512 kbits/sec DS DSL Rate: 8128 kbits/sec
WED MAY 20 07:05:04 2009
WanMgr reports DSL is UP
WED MAY 20 07:04:43 2009
Transceiver Software Version: 5.2.2.0
WED MAY 20 07:04:42 2009
Model Number: C90-610030-06
WED MAY 20 07:04:42 2009
Software Version: VER:03.08.02
WED MAY 20 07:04:42 2009
Product: ProLine Model: NAT Combo
end of diagnostic log file


Saturday, March 8, 2008

Carl Sagan Remembered

Carl Edward Sagan (November 9, 1934 – December 20, 1996) was an American astronomer and astrochemist and a highly successful popularizer of astronomy, astrophysics, and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI).

He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series Cosmos: A Personal Voyage, which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history.[1] A book to accompany the program was also published. He also wrote the novel Contact, the basis for the 1997 Robert Zemeckis film of the same name starring Jodie Foster. During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, humanism, and the scientific method. (Wikipedia)

Please take a moment to enjoy one of his master works, "The Pale Blue Dot".






Carl Sagan's "Cosmic Calendar" was first shown on his PBS series "Comos" a most amazing program.
The theme song from "Comos" follows the "Cosmic Calendar".





Play the following clip to hear all of the theme song to "Comos".