Lazzaro Spallanzani Lazzaro Spallanzai, was the Italian physiologist who was one of the founders of experimental biology. Born in Scandiano, a small town in the providence of Emilia on Jan. 12, 1729 , Spallanzani was among the many dedicated philosophersof the eighteeth century (Lazzaro...1). His main scientific interests were biological and was a master at mircoscopy,but he also looked into problems of physics,chemistry, geology, and meteorology, and volcanology (Gillispie,1).
began to become more skeptical of this idea. By the 20th century, spontaneous generation was known to be an incorrect theory. The reason it was known to be incorrect, primarily, was because of four scientists: Francesco Redi, John Needham, Lazzaro Spallanzani, and Louis Pasteur. Francesco Redi, in 1668, started the chain of experiments that would all add up to dissolve the theory of spontaneous generation. Redi was able to do this by doing a famous experiment involving meat and flies. He covered
whether or not microorganisms appeared spontaneously after boiling. He boiled chicken broth, put it into a flask, sealed it, and waited - sure enough, microorganisms grew. Needham claimed victory for spontaneous generation. An Italian priest, Lazzaro Spallanzani, was not convinced, and he suggested that perhaps the microorganisms had entered the broth from the air after the broth was boiled, but before it was sealed.
Actually, Sonar technology, precisely speaking, echo locating was first to be found used by bats. Research on animal sonar can be traced back to the work of the Italian scientist Lazzaro Spallanzani in the 1770s. He observed that bats could fly freely in a dark room where owls were helpless. He was amazed to observe that bats that had been blinded could fly and avoid obstacles as well as those that could see. Then, a Swiss scientist Jurine
Jennie Ivey Professor M. Walker PHOA 305 04 Nov 2016 Ultrasound: Scientific Imaging and Digital Technologies Lazzaro Spallanzani, an Italian biologist, could be credited for the discovery of high frequency 'ultrasound', when he demonstrated in 1794 the ability of bats piloting precisely in the dark was through echo reflection from high frequency inaudible sound. Professor Ian Donald, an English Physician from the University of Glasgow, Scotland invented the photographic Ultrasound in 1957.