有谁知道他们发明者的英文名字啊````

有谁知道他们发明者的英文名字啊````
Which scientist discovered that objects in water are lifted up by a force that helps them float?
Who used peas to show how physical characteristics are passed from parents to their children?
Who was the painter that studied dead bodies to improve his painting of people?
Who invented a lamp to keep miners safe underground?