Word Finder - filters

definition

A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.

definition

Electronics or software that separates unwanted signals (for example noise) from wanted signals or that attenuates selected frequencies.

definition

Any item, mechanism, device or procedure that acts to separate or isolate.

example

He runs an email filter to catch the junk mail.

definition

Self-restraint in speech.

example

He's got no filter, and he's always offending people as a result.

definition

A non-empty upper set (of a partially ordered set) which is closed under binary infima (a.k.a. meets).

example

If (1) the universal set (here, the set of natural numbers) were called a "large" set, (2) the superset of any "large" set were also a "large" set, and (3) the intersection of a pair of "large" sets were also a "large" set, then the set of all "large" sets would form a filter.

definition

To sort, sift, or isolate.

example

This strainer should filter out the large particles.

definition

To diffuse; to cause to be less concentrated or focused.

example

The leaves of the trees filtered the light.

definition

To pass through a filter or to act as though passing through a filter.

example

The water filtered through the rock and soil.

definition

To move slowly or gradually; to come or go a few at a time.

example

The crowd filtered into the theater.

definition

To ride a motorcycle between lanes on a road

example

I can skip past all the traffic on my bike by filtering.

Plants are the best natural air filters.

In the best days of the so-called Jamaica Trains in Demerara, three-quarters of a ton of coal in addition to the megass was burned per ton of sugar made, and with this for many years planters were content, because they pointed to the fact that in the central factories, then working in Martinique and Guadeloupe, with charcoal filters and triple-effect evaporation, 750 kilos of coal in addition to the megass were consumed to make woo kilos of sugar.

Taylor bag filters are generally used for clearing the melted liquor of its mechanical impurities.

They have a false bottom, with cloth or gravel filters.

In diffusion plants the milk of lime is added, in proper proportion, in the cells of the diffusion battery, and the chips or slices themselves act as a mechanical filter for the juice; while in the Sandwich Islands coral-sand filters have been employed for some years, in addition to the chips, to free the juice from impurities held in mechanical suspension.

In Germany very similar filters have also been used, pearl-quartz gravel taking the place of coral sand, which it closely resembles.

Any sand or heavy matter in suspension is allowed to fall to the bottom of the pan into the " sandbox " before the melted sugar is run off to the cloth filters.

In a refinery in Nova Scotia a system has been introduced by which a travelling crane above the bag filters lifts up any head bodily with all its bags attached, and runs it to the mud and washing tanks at the end of the battery, while another similar crane drops another head, fitted with fresh bags, into the place of the one just removed.

Innumerable forms of filters made with these and other materials were put on the market, and were extolled as removing impurities of every kind from water, and as affording complete protection against the communication of disease.

Examined from this point of view the majority of domestic filters were found to be gravely defective, and even to be worse than useless, since unless they were frequently and thoroughly cleansed, they were liable to become favourable breeding-places for microbes.

The filtering medium in this, as in other filters of the same kind, takes the form of a hollow cylinder or "candle," through the walls of which the water has to pass from the outside to the inside, the candles often being arranged so that they may be directly attached to a tap, whereby the rate of flow, which is apt to be slow, is accelerated by the pressure of the main.

But even filters of this type, if they are to be fully relied upon, must be frequently cleaned and sterilized, and great care must be taken that the joints and connexions are watertight, and that the candles are without cracks or flaws.

This provides for taking water from the Ohio river at a point on the Kentucky side opposite the village of California, Ohio, and several miles above the discharge of the city sewers; for the carrying of the water by a gravity tunnel under the river to the Ohio side, the water being thence elevated by four great pumping engines, each having a daily capacity of 30,000,000 gallons, to settling basins, being then passed through filters of the American or mechanical type, and flowing thence by a gravity tunnel more than 4 m.

This occurs with clear water as well as with turbid, and obviously arises mainly from the loss of plant food which occurs when water filters through or trickles over poor soil.

In February 1572 he forced on the kirk an order of bishops, " Tulchan bishops," filters through which the remaining wealth of the church trickled into the coffers of the state, or of the regent.

It is generally held that the practice of thus limiting families usually prevails, in the first instance, among the betteroff classes, and in time filters down, as "the gospel of comfort" is accepted by those of less resources, until the prolificity of the whole community is more or less affected by it.

Tests made for several successive years by means of culture media and sterile plates, demonstrated the perfect bacteriologic purity of the air, first drawn into the caverns through myriads of rocky crevices that served as natural filters, then further cleansed by floating over the transparent springs and pools, and finally supplied to the inmates of the sanatorium.

The cause of this choking of the pores is precisely the same as that described below in the case of sand filters.

Yet it cannot be too constantly urged that such filtration depends for its comparative perfection upon the surface film; that this surface film is not present when the filter is new, or when its materials have been recently washed; that it may be, and very often is, punctured by the actual working of the filters, or for the purpose of increasing their discharge; and that at the best it must be regarded as an exceedingly thin line of defence, not to be depended upon as a safeguard against highly polluted waters, if a purer source of supply can possibly be found.

In the best filters an automatic arrangement for the measurement of the supply to each separate filter, and for the regulation of the quantity within certain limits, is adopted, and the resistance at outflow is so arranged that not more than a certain head of pressure, about 22 ft., can under any circumstances come upon the surface film, while a depth of several feet of water is maintained over the sand.

This course can scarcely fail to introduce into the sand many bacteria, which may be washed through when the full working of the filters is begun; and it should not, therefore, be adopted when the source of the supply is known to be subject to human pollution.

It is therefore natural that attempts should have been made to construct filters which, while permitting the slow percolation of water, should preclude the passage of bacteria or their spores.

The fat is then drawn off the aqueous (gluey) layer, and strained through sieves or filters.

Platelet transfusion through negatively charged filters can also activate the contact system and give rise to significant hypotension in patients receiving ACE inhibitors.

We design our air filters to provide minimum restriction allowing high airflow into an engine.

Designs include linear phase filters, a wideband phase shifter, and chirp filters with fractional bandwidths exceeding 100% .

Filters must be situated in and not vignette the collimated beam [3.10, Sa] .

They installed high-energy air filters and stucco ceilings to cut down on odors and noise.

The effect of lower sulfur coal blends on the performance of electrostatic precipitators and fabric filters is also covered.

The HST image was made by combining images taken in four different color filters in order to create a three-color picture.

The spooling daemon uses the appropriate filters to print the data accordingly.

In 1986 further recognition was achieved with our work with bedside Leucocyte depletion filters.

The exhaust filters on red double-deckers, those icons of London streets, are in trouble for creating more smog.

High efficiency electrostatic precipitators or fabric filters can reduce particulate emissions to low concentrations.

The operator launched the filters with great fanfare last week, five months ahead of the mobile phone industry's self-imposed deadline.

High extinction polarizing filters for microscopy are preferable for polarization studies (a microscope dealer's own brand should be of good quality ).

For the most popular artifacts such as ceramic color standards and neutral density filters, streamlined procedures give a fast turn-around.

Buried up lighters with dichroic filters are installed at the base of each column along the length of the colonnade.

But filters are n't foolproof - sites and users can get round them - so do stay involved.

High quality pre-amp with variable gain control and band pass filters to minimize interference.

Spammers are now publishing their own SPF records to help themselves appear more legit and to increase chances of bypassing any existing filters.

The new STX specification provides the prospect of being able to write SAX filters without needing to do low-level Java coding.

Its combination of permanent lubricity and high hardness enabled filters to be easily released and significantly extended the life of the molds.

Whiskers This first image of the ' Whiskers ' slide was taken at 25x magnification using crossed polar filters.

Especially due to the fact that these search engines and the rigorous ranking filters they use to spit out search results change almost monthly.

Narrow bandpass filters also take out sky glow emission lines which also helps to improve the visual contrast of very faint nebulae.

The kidney contains millions of small filters called nephrons.

Denitrification filters convert nitrate to nitrogen gas, the bacteria in such filters are anaerobic.

For long distance off-road events, two double-size remote mounted filters would be best.

It is then pushed at high pressure through filters in a process described as reverse osmosis.