When there are multiple spans, the intermediate supports are known as piers.

When multiple definitions could serve equally well, then all such definitions apply simultaneously.

When multiple users access the database concurrently the actions of a user should be uninterrupted and unaffected by actions of other users.

When multiple structures are aligned with each other, such as buildings along a street, the horizontal tops and bottoms of the structures will all typically converge at a vanishing point.

: When multiple planets are present, each one slightly perturbs the others ' orbits.

When light makes multiple reflections between two or more parallel surfaces, the multiple beams of light generally interfere with one another, resulting in net transmission and reflection amplitudes that depend on the light's wavelength.

When multiple thicknesses are built, the shielding multiplies.

When a pilot moves the control column ( or sidestick ), a signal is sent to a computer ( analogous to moving a game controller ) the signal is sent through multiple wires ( channels ) to ensure that the signal reaches the computer.

When there are multiple choirs of strings, the player is often able to control which choirs sound.

When the kumquats are divided into multiple species the name Fortunella japonica ( Citrus japonica ) is retained by this group.

When the kumquats are divided into multiple species the name Fortunella obovata ( Citrus obovata ) is used for this group.

When adding, subtracting, or comparing vulgar fractions, it is useful to find the least common multiple of the denominators, often called the lowest common denominator, because each of the fractions can be expressed as a fraction with this denominator.

When synchronizing multiple clock-dependent digital devices together with video, such as digital audio recorders, the devices must be connected to a common word clock signal that is derived from the house black burst signal.

When a program comprises multiple object files, the linker combines these files into a unified executable program, resolving the symbols as it goes along.

When considering a new application, the engineer can compare multiple learning algorithms and experimentally determine which one works best on the problem at hand ( see cross validation.

When multiple parties want the same thing, pit them against one another.

When optic neuritis is associated with MRI lesions suggestive of multiple sclerosis ( MS ) then general immunosuppressive therapy for MS is often prescribed ( IV methylprednisolone may shorten attacks ).

A number a is a root of P if and only if the polynomial x − a ( of degree one in x ) divides P. It may happen that x − a divides P more than once: if ( x − a )< sup > 2 </ sup > divides P then a is called a multiple root of P, and otherwise a is called a simple root of P. If P is a nonzero polynomial, there is a highest power m such that ( x − a )< sup > m </ sup > divides P, which is called the multiplicity of the root a in P. When P is the zero polynomial, the corresponding polynomial equation is trivial, and this case is usually excluded when considering roots: with the above definitions every number would be a root of the zero polynomial, with undefined ( or infinite ) multiplicity.

When these viral episomes initiate lytic replication to generate multiple virus particles, they in general activate cellular innate immunity defense mechanisms that kill the host cell.

When multiple routers are used in interconnected networks, the routers exchange information about destination addresses, using a dynamic routing protocol.

When spasticity occurs, such as following a stroke, it manifests in abnormal and stereotypical patterns across multiple joints called obligatory synergies.

When action potentials from multiple presynaptic neurons fire simultaneously, or if a single presynaptic neuron fires at a high enough frequency, the EPSPs can overlap and summate.

When user's requests for multiple programs are conflicting, the lower priority program in the Season Pass Manager is either not recorded or clipped where times overlap.

When the researchers did the experiment multiple times, they found that measurement of one polarization did not always disturb the other state as much as the uncertainty principle predicted.

Though attractive in many cases, a general-purpose DBMS is not always the optimal solution: When certain applications are pervasive with many operating instances, each with many users, a general-purpose DBMS may introduce unnecessary overhead and too large " footprint " ( too large amount of unnecessary, unutilized software code ).

When data is replicated between database servers, so that the information remains consistent throughout the database system and users cannot tell or even know which server in the DBMS they are using, the system is said to exhibit replication transparency.

When Freenet 0. 5 ( FCon or Freenet Classic Opennet ) forked into Freenet 0. 7, most users moved to Freenet 0. 7.

When the injunction came into force versions later than 5. 5. 10 left the network or were disabled as users started them.

When PNG development started in early 1995, developers decided not to incorporate support for animation, because the majority of the PNG developers felt that overloading a single file type with both still and animation features is a bad design, both for users ( who have no simple way of determining to which class a given image file belongs ) and for web servers ( which should use the image / foo MIME type for stills and video / foo for animations -- GIF notwithstanding ).

When users visit a website ( using " user agent " software such as a web browser ), a text string is generally sent to identify the user agent to the web server.

When creating a Neopet, users may pick between three sets of randomly generated stats used for battling in the Battledome.

When users are unable to download the CD, they can request to have a copy sent to them, free of charge.

When local area networks became widespread, it was natural that administrators and users would desire remote access to the news spool, and NNTP, the Network News Transfer Protocol, was developed to serve that need.

* When writing RPN on paper ( something that some users of RPN may not do ) adjacent numbers need a separator between them.

When Hewlett-Packard introduced a later business calculator, the HP-19B, without RPN, feedback from financiers and others used to the 12C compelled them to release the HP-19BII, which gave users the option of using algebraic notation or RPN.

When slang spreads beyond the group or subculture that originally used it, its original users often replace it with other, less-recognised terms to maintain group identity.

When the server serves data in a commonly used manner, for example according to the HTTP or FTP protocols, users may have their choice of a number of client programs ( most modern web browsers can request and receive data using both of those protocols ).

When Telnet was initially developed in 1969, most users of networked computers were in the computer departments of academic institutions, or at large private and government research facilities.

When the method is applied to a sufficient number of people over the course of a project, the objections raised above become addressed: The sample size ceases to be small and usability problems that arise with only occasional users are found.

When used as a sleeping aid, valerian appears to be most effective on users who have difficulty falling asleep.

When sending mail, users can only control encryption at the first hop from a client to its configured outgoing mail server.

When data is formatted into packets, the bitrate of the communication medium can be better shared among users than if the network were circuit switched.

When burning candles in glass holders or jars, users should avoid lighting candles with chipped or cracked containers, and stop use once 1 / 2 inch or less of wax remains.

When participating users are off-line, changes for their workspaces copies are queued, either on an Office Groove Server that mediates the workspace or via other participants ( peer-to-peer ), to be sent to users when they come on-line.

* When car owners use roads, they impose congestion costs and higher accidents risks on all other users.