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If one places between the phosphorescent substance and the paper a piece of money or a metal screen pierced with a cut-out design, one sees the image of these objects appear on the negative ... One must conclude from these experiments that the phosphorescent substance in question emits rays which pass through the opaque paper and reduce silver salts.
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Some Related Sentences
If and one
If you take the one, you'd better take both ''.
`` If you can conveniently let me have twenty dollars '', he wrote one friend in 1791 when he was Secretary of the Treasury.
If one dancer slaps another, the victim may do a pirouette, sit down, or offer his assailant a fork and spoon.
If a child had a single drop of Negro blood, he would revert to the ancestral line which, except as slaves under a superior race, had not made one step of progress in 3,000 years.
If we examine the three types of change from the point of view of their internal structure we find an additional profound difference between the third and the first two, one that accounts for the notable difference between the responses they evoke.
If in any one calculation Ptolemy had had to invoke 83 epicycles all at once, while Copernicus never required more than one third this number, then ( in the sense obvious to Margenau ) Ptolemaic astronomy would be simpler than Copernican.
If within one year you can make a success out of the American, you can practically name your own salary thereafter.
If it is not one of his best books, it can only be considered unsatisfactory when compared with his own Garibaldi.
If one finger is raised against the authorities, all our moral power will vanish.
If any one of them has any power to veto the Secretary General's decisions the nature of the organization will have changed.
If he can bounce back with one of those 25 home runs years, the club will have to be better off offensively.
If they do meet and recognize one another, slap backs and embrace, the moment soon is done.
If either one ever started making promises, there is no telling where the promises would end.
If one follows the reports of the Congress, one finds that there still seems considerable uncertainty in the minds of the leaders themselves about what exactly to do in this matter.
Somebody, got to be somebody If I don't put my two cents in soon, somebody else will I know they're waitin only for one thing: for the bastards what done it to be nailed.
If we had, then one of us would have had to go instead.
`` If I catch you one more time down here without stockings '' --
If, for some reason such as economy, we are not going to develop aircraft nuclear propulsion with a sense of national urgency, then we should turn our effort to developing jet engines with a thrust-to-weight ratio of 12 or 15 to one.
If you don't own a planer and don't want to buy one, it's well worth renting.
Note: If 1/2-inch panel board is used inside and out, or 5/8-inch one side and 3/8-inch the other, and 1/8-inch glass is used, stock lumber in Af, Af, and Af can be used in making the glass panels.
If you have a full-time doctor now, can he be replaced with a part-time doctor or one who serves on a fee-per-case basis only??
If you use one of the new year-round cooling system fluids such as `` Dowguard '' be sure to check it.
If you run into excess plug fouling on one truck, check to be sure that the rig has a thermostat.
If and places
If a tile is placed between two hotel chains of the same size, the individual player who places the tile decides which hotel chain remains on the board and which is acquired.
If a team places high enough at selected USASF / IASF sanctioned national competitions, they could be included in the Cheerleading Worlds and compete against teams from all over the world, as well as receive money for placing.
" It cannot be done " and he adds: " If a patient places himself in autohypnosis and regresses himself in an effort to reach illness or birth or prenatals, the only thing he will get is ill ".
For example, " If I send my résumé to enough places, the law of averages says that someone will eventually hire me.
If I could trade places with Dag, I would.
If a tie in the other places still exists, a jump-off is not normally conducted, unless the competition is a qualifying meet, and the tie exists in the final qualifying spot.
If it is another extension, the operator places the front cord in the associated jack and pulls the front key backwards to ring the called party.
If you ever happen to visit any barber shops or other small gathering places in cities like Multan, you can find a copy of this newspaper there.
If the opponent places a stone at B or D, the remaining hex can be filled to join the original two stones into a single group.
If the original string had several substrings that occurred often, then the transformed string will have several places where a single character is repeated multiple times in a row.
If the crossbar switch has M inputs and N outputs, then a crossbar has a matrix with M x N cross-points or places where the " bars " cross.
If a player's move places the opponent's king under attack, that king is said to be in check, and the player in check is required to immediately remedy the situation.
If some nonterminal symbol S is used in several places in the grammar, SLR treats those places in the same single way rather than handling them individually.
* If within the qualifying places exist reserve teams whose senior teams are already in Segunda División, subsequent places are allowed to play off.
If the price of the tickets rises to an amount that requires him to pay more than the value he places on them, he should figure the change in prospective cost into the decision-making and re-evaluate his decision.
If a mill was a great distance from main roads, often " tram roads " were constructed so that lumber could be shipped to larger places.
If the challenging party cannot show that the statute is discriminatory, then it must demonstrate that the statute places a burden on interstate commerce that " is clearly excessive in relation to the putative local benefits.
If the pedestrian has priority, then they have an incentive to use the crossing instead of crossing the road at other places.
In an article published in the Guardian in 2007, Julie Bindel wrote: " If you believe their PR, Nevada's legal brothels are safe, healthy – even fun – places in which to work.
If no prey ventures out in the open, Great Grey Shrikes will rummage through the undergrowth or sit near to hiding places and flash their white wing and tail markings to scare small animals into coming out.
If binding takes places this DNA / RNA hybrid can be degraded by the enzyme RNase H.
If an event were to be observed at two different places on Earth at the same time, this could be used as evidence against an atmospheric origin.
1.205 seconds.