Arcesilaus
Arcesilaus , c.316-c.241 BC, Greek philosopher of Pitane in Aeolis. He was the principal figure of the Middle Academy. Despite his position in the Academy , his teachings diverged from Platonic doctrine. By emphasizing the doubt expressed by Socrates as to the possibility of gaining knowledge, he took a position comparable to that of the Skeptics (see skepticism ). He argued that knowledge and opinion could not be distinguished from each other, so that what anyone claims to know may be more or less probable but not certain. In denying the possibility of certainty he was a major opponent of the Stoics (see Stoicism ). Arcesilaus indirectly influenced Carneades and his school.
Bibliography: See A. A. Long, The Hellenistic Philosophers (2 vol. 1987).
Cite this article
Pick a style below, and copy the text for your bibliography.
 "Rocky Mountain News (Denver, CO)")
|
RUDDER PROBLEMS STILL DOG 737 JETS TROUBLE CONTINUES DESPITE FIXES ORDERED IN WAKE OF SPRINGS CRASH.(Local)
Newspaper article from: Rocky Mountain News (Denver, CO); 3/8/1999; 700+ words
; ...problems after fixes intended to solve rudder malfunctions suspected of causing two...Hartford, Conn. * A second 737 with a new rudder control system was grounded the previous...Seattle when the pilot reported that the rudder pedals felt sluggish during a pre-flight...
|
|
RUDDER BLAMED IN 1994 USAIR CRASH
News Wire article from: United Press International; 3/24/1999; 700+ words
; ...using a single panel rudder with dual concentric...jets use two-panel rudders, which provide a backup system in case one rudder fails. The NTSB concluded...2000, the fleet's rudders will be completely safe...malfunctions in the Boeing 737 rudder system that could lead...
|
|
Rudder Reinvents Personal Finance Management and Unveils Innovative Financial Planning Solution at DEMOfall 08.
PR Newswire; 9/8/2008; 700+ words
; ...PRNewswire/ -- At DEMOfall 08 today, Rudder(R), Inc., a company that enables...simple and secure one-time set up, Rudder takes financial management to the lifestyle...valuable, forward-looking alerts, Rudder provides users unprecedented ease and...
|
|
Rudder System Recommendation Could Portend More to Come.
Newspaper article from: Air Safety Week; 6/7/2004; 700+ words
; ...recommendation to modify the Airbus A300-600 rudder travel limiter (RTL) to prevent excessive...more calls to improve the airplane's rudder control system. The National Transportation...its findings that the RTL did not limit rudder movement as designed when an American...
|
|
|
Rudder Launches Savings Marketplace for Consumers and Advertisers.
PR Newswire; 12/2/2008; 700+ words
; ...HOUSTON, Dec. 2 /PRNewswire/ -- Today, Rudder(R), Inc., a company that enables...presenting users opportunities to save, Rudder's new marketplace also provides advertisers...companies that are serving up savings to Rudder's customers in time for the holiday...
|
|
|
Rudder reliability.
Newspaper article from: Air Safety Week; 7/17/2000; 700+ words
; ...that reference incidents concerning the rudder system of the Boeing [BA] B737. A case of jammed rudder pedals prompted the latest ASRS alert...experienced a stiffness or jamming of the rudder pedals during a routine ground check. The...
|
|
|
Aggressive Rudder Inputs Could Be Deadly, Safety Board Warns.
Newspaper article from: Air Safety Week; 2/18/2002; 700+ words
; ...Pilots need to exercise caution using the rudder, especially rapid full inputs to opposite...systems design, maintenance, history of rudder system performance (errant yaw dampers, uncommanded rudder deflections), etc. On all aircraft the...
|
|
|
Rudder Retrofit Program Points to Weakness in Original Approval.
Newspaper article from: Air Safety Week; 10/14/2002; 700+ words
; ...unsafe design architecture" in the rudder control system of the B737 aircraft...insisting that the fleetwide retrofit of a new rudder control system is not being undertaken...potential latent failures in the B737 rudder system. Some 4,500 B737s worldwide...
|
|
Rudder Movement Suspected In Incident; Aging Data Recorder On Jet Limits Probe
Newspaper article from: The Washington Post; 2/26/1999; ; 700+ words
; ...Washington International Airport experienced a rudder movement, but they don't know why and...systems and movements, indicates that the rudder movement may have occurred slowly in the...8 degrees to the right because of the rudder movement before the crew brought it back...
|
|
Rudder Control on 737's May Need Redesign to Improve Safety.
Newspaper article from: Knight Ridder/Tribune Business News; 3/24/1999; ; 700+ words
; ...potentially deadly -- problem lurks in the rudder system of every Boeing 737. The board...that a jammed hydraulic valve led to a rudder malfunction that caused a USAir 737 to...declared that the valve used to control the rudder on every 737 is not "reliably redundant...
|
|
rudder
Book article from: The Oxford Companion to Ships and the Sea
...is thought that the rudder was transmitted from the Orient to the West. Rudders in dinghies and many...ships also have their rudders hung on a rudder stock, the rudder being...to turn an unbalanced rudder. Rudders on modern ships are...
|
|
Rudder Grange
Book article from: The Oxford Companion to American Literature
Rudder Grange, humorous novel by Frank Stockton , published in 1879. Its popularity led to several sequels, including The Rudder Grangers Abroad (1891) and Pomona's Travels (1894).
|
|
|
helm
Book article from: The Oxford Companion to Ships and the Sea
...another name for the tiller , by which the rudder of small sailing vessels, such as yachts...replacement of the original steering oar by the rudder, steering by tiller, aided in larger...The steering wheel is connected to the rudder so that the direction of turn is the same...
|
|
|
steering gear
Book article from: The Oxford Companion to Ships and the Sea
...steering gear. In order to turn a rudder a force is applied to a tiller . As ships became larger the rudders also increased in size and the manpower necessary to turn the rudder increased. Brunel 's large...the tiller attached to the rudder stock. The hydraulic rams...
|
|
|
pintle
Book article from: The Oxford Companion to Ships and the Sea
...pin attached to the leading edge of the rudder of a small boat. Normally two pintles are fitted to such a rudder, and they drop into gudgeons , or rings, fixed to the boat's stern, when the rudder is placed, or hung, in position. This...
|
