double-blind procedure
double-blind experiment
double-blind study | an experimental procedure in which neither the subjects of the experiment nor the persons administering the experiment know the critical aspects of the experiment, a double-blind procedure is used to guard against both experimenter bias and placebo effects |
experiment
experimentation | the act of conducting a controlled test or investigation |
suction curettage
vacuum aspiration | a method of induced abortion, prior to the th week of gestation the embryo and placenta are removed by applying suction to the dilated cervix |
| Michelson-Morley experiment | a celebrated experiment conducted by Albert Michelson and Edward Morley, their failure to detect any influence of the earth's motion on the velocity of light was the starting point for Einstein's theory of relativity |
| experiment | a venture at something new or different, as an experiment he decided to grow a beard |
air pump
vacuum pump | a pump that moves air in or out of something |
dust bag
vacuum bag | a bag into which dirt is sucked by a vacuum cleaner |
thermobaric bomb
fuel-air bomb
vacuum bomb
volume-detonation bomb
aerosol bomb | a bomb that uses a fuel-air explosive, a thermobaric bomb can create overpressures equal to an atomic bomb |
tube vacuum tube
thermionic vacuum tube
thermionic tube
electron tube
thermionic valve | electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
vacuum
vacuum cleaner | an electrical home appliance that cleans by suction |
| vacuum chamber | a chamber from which nearly all matter (especially air) has been removed |
vacuum flask
vacuum bottle | flask with double walls separated by vacuum, used to maintain substances at high or low temperatures |
vacuum gauge
vacuum gage | a gauge for indicating negative atmospheric pressure |
experiment
experimentation | the testing of an idea, it was an experiment in living, not all experimentation is done in laboratories |
| control experiment | an experiment designed to control for variables affecting the results of another experiment |
| pilot experiment | a preliminary experiment whose outcome can lead to a more extensive experiment |
vacuum
vacuity | a region that is devoid of matter |
void
vacancy
emptiness
vacuum | an empty area or space, the huge desert voids, the emptiness of outer space, without their support he'll be ruling in a vacuum |
vacuum
vacuity | the absence of matter |
vacuum
vacuum-clean
hoover | clean with a vacuum cleaner, vacuum the carpets |
| experiment | to conduct a test or investigation, We are experimenting with the new drug in order to fight this disease |
| experiment try out | try something new, as in order to gain experience, Students experiment sexually, The composer experimented with a new style |
experimentally
by experimentation
through an experiment | in an experimental fashion, this can be experimentally determined |