thumbBaltimore and Ohio Railroad 0-4-0 Atlantic # 2 1832, the Grasshopper locomotive | Grasshopper at the B & O Railroad Museum. Under the Whyte notation for the classification of steam locomotives, 0-4-0 represents one of the simplest possible types, that with two axles and four coupled wheels, all of which are driven.

The sermons to the faithful in the early ages were of the simplest kind, being merely expositions or paraphrases of the passage of Scripture that was read, coupled with extempore effusions of the heart.

# The Einstein tensor must match the stress-energy tensor for the scalar field, which in the simplest case, a minimally coupled massless scalar field, can be written

The simplest kind of separate system uses a single, self-contained unit.

The simplest calendar system just counts time periods from a reference date.

This makes the plurality voting system among the simplest of all voting systems for voters and vote counting officials ( it is however very contentious to draw district boundary lines in this system ).

Because it is typically one of the simplest programs possible in most programming languages, it is by tradition often used to illustrate to beginners the most basic syntax of a programming language, or to verify that a language or system is operating correctly.

The simplest numeral system is the unary numeral system, in which every natural number is represented by a corresponding number of symbols.

The size of the bilaterian nervous system ranges from a few hundred cells in the simplest worms, to on the order of 100 billion cells in humans.

The simplest mechanical oscillating system is a mass attached to a linear spring subject to no other forces.

A contact printer, the simplest exposure system, puts a photomask in direct contact with the wafer and exposes it to a uniform light.

The simplest theory of operation for a pulley system assumes that the pulleys and lines are weightless, and that there is no energy loss due to friction.

The simplest form of the particle in a box model considers a one-dimensional system.

States of the composite system which can be represented in this form are called separable states, or ( in the simplest case ) product states.

In theoretical studies, it is often convenient to consider the simplest kind of thermodynamic system.

It is the simplest numeral system to represent natural numbers: in order to represent a number N, an arbitrarily chosen symbol representing 1 is repeated N times.

The simplest error-detection system, the parity bit, is in fact a trivial 1-bit CRC: it uses the generator polynomial x + 1.

In the Schrödinger theory, the simplest such object is the overall Hamiltonian, which represents the total energy of the system.

This obviously includes operations that would be deemed contrary to all but the simplest security policies, such as divulging an email or password that should be kept secret ; however, barring special provisions in the architecture of the system, there is no denying that the computer could be programmed to perform these undesirable tasks.

In addition, C. elegans is one of the simplest organisms with a nervous system.

This multi-stage system, designed by Wernher von Braun in 1956 for his proposed Project Orbiter, obviated the need for a guidance system in the upper stages, proving to be the simplest and most immediate method for putting a payload into orbit ; but as it had no upper-stage guidance, it could not inject the payload into a precise orbit.

In almost any class of computational system, one very quickly finds instances of great complexity among its simplest cases.

First, there are perhaps several dozen cases where the NKS book introduces the simplest known system in some class that has a particular characteristic.

The simplest kind of linear system involves two equations and two variables:

The simplest example is when the defensive team records two outs and makes an error on a play that would have been the third out.

John Dalton's original atomic hypothesis assumed that all elements were monatomic and that the atoms in compounds would normally have the simplest atomic ratios with respect to one another.

For any inertial frame, the Coriolis force and the centrifugal force disappear, so application of the principle of special relativity would identify these frames where the forces disappear as sharing the same and the simplest physical laws, and hence rule that the rotating frame is not an inertial frame.

The simplest case would be two electrons starting at A and B ending at C and D. The amplitude would be calculated as the " difference ",, where we would expect, from our everyday idea of probabilities, that it would be a sum.

Regardless of whatever may have given rise to initial reports of a " missing hyphen ", the simplest and most consistent-sounding explanation that the public and Congress would accept would probably have been preferable to those who simply wanted to get on with the job of a Venus fly-by mission.

In its simplest form, a battering ram is just a large, heavy log carried by several people and propelled with force against an obstacle ; the ram would be sufficient to damage the target if the log was massive enough and / or it were moved quickly enough ( that is, if it had enough momentum ).

::# A point-to-point link ( described above ) is sometimes categorized as a special instance of the physical star topology – therefore, the simplest type of network that is based upon the physical star topology would consist of one node with a single point-to-point link to a second node, the choice of which node is the ' hub ' and which node is the ' spoke ' being arbitrary.

::# After the special case of the point-to-point link, as in note ( 1 ) above, the next simplest type of network that is based upon the physical star topology would consist of one central node – the ' hub ' – with two separate point-to-point links to two peripheral nodes – the ' spokes '.

The simplest way to use mass drivers for spacecraft propulsion would be to build a large mass driver that can accelerate cargo up to escape velocity, though RLV launch assist like StarTram to low earth orbit has also been investigated.

The simplest solution would be execution: his titles would then pass to Edward of Windsor, whom Isabella could control, while it would also prevent the possibility of his being restored.

Ponzi was bringing in cash at a fantastic rate, but the simplest financial analysis would have shown that the operation was running at a large loss.

The rebels " saw that the simplest way to destroy the power of the nobles in the countryside would be to free their vassals, and this they did by baptizing them.

The classic filter would be grep, which at it simplest prints to its output any lines containing a character string.

The simplest way to do this would be to reverse the system used in the camera ; arrange three separate black-and-white displays behind colored filters and then optically combine their images using mirrors or prisms onto a suitable screen, like frosted glass.

The simplest design would be a single bead centered as a focal point on the string medium.

Another was Jerrold Zacharias, who, believing that the sodium nucleus would be too difficult to understand, proposed studying the simplest of the elements, hydrogen.

The electric current that arises in the simplest textbook situations would be classified as " free current "— for example, the current that passes through a wire or battery.