Ernst Mach, Austrian physicist (1838–1916), born in Moravia (now Czech Republic).
Used in a Sentence
mach
Definitions, parts of speech, synonyms, and sentence examples for mach.
Editorial note
The Mig-25's top speed is mach 2.8 but was clocked by the USA over Israel at Mach 3.2 (Yeah, the SR71 ain't all that).
Examples16
Definitions4
Parts of speech1
Quick take
Ernst Mach, Austrian physicist (1838–1916), born in Moravia (now Czech Republic).
Meaning at a glance
The clearest senses and uses of mach gathered in one view.
A surname from Czech.
(informal, countable) Clipping of Machiavellian. [An unscrupulous schemer.]
Definitions
Core meanings and parts of speech for mach.
noun
Ernst Mach, Austrian physicist (1838–1916), born in Moravia (now Czech Republic).
noun
A surname from Czech.
noun
(informal, countable) Clipping of Machiavellian. [An unscrupulous schemer.]
noun
(physics, uncountable) A ratio of the speed (of an object, etc.) to the speed of sound in the fluid or other medium through which the object travels. Usually used to describe supersonic speeds; always precedes the Mach number.
Example sentences
The Mig-25's top speed is mach 2.8 but was clocked by the USA over Israel at Mach 3.2 (Yeah, the SR71 ain't all that).
So this would be replacing Mach with L4, retaining Hurd for the user space operating system components.
What if you have a load command in your mach-o which asks for an address below the 32-bit boundary?
It's true that a Mach port is quite tricky (particularly the virtual memory semantics).
I do not believe that it is easy to provide the Mach IPC interface in the Linux kernel.
My guess is that it stayed simpler than Mach but not too simple.
The SR71's top speed was just over mach 3.
The performance penalties aren't intrinsic to microkernels, so much as to Mach because of the heavyweight RPC mechanism and its elaborate port right and type checking of messages.
The paper was written in response to the porting effort of the Hurd away from Mach to L4, and realizing the latter didn't pan out well for object-capability systems.
It also initializes the Mach bootstrap port name space and becomes the central service discovery mechanism for low-level tasks, thus being the centralized arbiter all in an odd position (PID1).
But as a desirable residential neighbourhood it has some shortcomings, starting with the slight lack of breathable air and the sub-Antarctic nighttime temperatures and the Mach 0.5 dust storms, and working down from there.
But in addition, some iXsystems employees have ported much of the OSF Mach kernel (sans memory object/external pager interface) as a module, plus partial or full implementations of XPC, libdispatch, ASL (Apple System Logger), liblaunch and other facilities just so they can run the low-level Darwin/OS X userspace and launchd, especially.
Quote examples
The airlines said "no thanks, give us 15-20% lower fuel burn rate at the current speed" (Mach 0.85).
Proper noun examples
The premise of the Sonic Cruiser was a 15-20% increase in speed (Mach 0.95-0.98) without increasing the fuel burn rate.
Hurd and Mach's problems are most likely due to design choices that created problems.
Hurd is the higher level services of a micro-kernel, but uses existing kernels for the actual part in kernel space (normally GNU Mach).
Frequently asked questions
Short answers drawn from the clearest meanings and examples for this word.
How do you use mach in a sentence?
The Mig-25's top speed is mach 2.8 but was clocked by the USA over Israel at Mach 3.2 (Yeah, the SR71 ain't all that).
What does mach mean?
Ernst Mach, Austrian physicist (1838–1916), born in Moravia (now Czech Republic).
What part of speech is mach?
mach is commonly used as noun.