واژگان دانشمندان کلیدی - توماس ادیسون

the activity of providing services or products in exchange for money

a great deal of effort or endurance put into achieving a specific goal or task

the ability to hear voices or sounds through the ears

someone who makes or designs something that did not exist before

a country in North America that has 50 states

one's brother or sister

interested in learning or finding out about people, things, or situations

to do a scientific test on something or someone in order to find out the results

to create or design something new that did not previously exist

to give something to someone in exchange for money

a set of large folded sheets of paper with lots of stories, pictures, and information printed on them about things like sport, politic, etc., usually issued daily or weekly

a room or building equipped for scientific research, experiments, testing, or the production of chemicals or medicines

suitcases or other bags, containing our clothes and things, that we carry when we are traveling

a test done to prove the truthfulness of a hypothesis

something new, especially a device, method, or process, that has been created or developed

machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically

any piece of equipment that is mechanical, electric, etc. and performs a particular task

to capture sound or a performance in a format that can be reproduced or broadcast later

to listen to or watch something again after recording it

a rounded glass that is inside an electric lamp and from which light shines

relating to, produced by, or using electricity

a type of lamp that uses gas as its fuel to produce light

to maintain presence over a period

a building or room in which particular goods are made or fixed by different means