English Work
Páginas: 4 (819 palabras)
Publicado: 6 de noviembre de 2012
UNIVERSITY OF PANAMÁ
REGIONAL UNIVERSITY CENTER OF AZUERO
FACULTY OF EXACT AND NATURAL SCIENCES TECHNOLOGY
SCHOOL OF BIOLOGY
ENGLISH WORK
___________
XXXXXXXXX
MAGISTER
__________
IISEMESTER
NOVEMBER 6, 2012
ANSWERS
1. What is a microscope and what are its uses?
The microscope is an instrument that focuses light or other radiation through one or more lenses to forma magnified image of a specimen. The microscope has revolutionized the study of biology and medicine.
2. What happened between 1590 and 1610?
Magnification by simple lenses has been known fromancient times, but the development of the modern microscope dates from the construction of compound lens systems.
3. What did the Janssen do?
In 1960 Hans and Zacharias Janssen constructed asimple instrument Made of a pair of lenses mounted in a sliding tube.
4. Who was Anton van Leeuwenhoek? What did his microscope consist of?
He became interested in science when, as abusinessman, he began grinding lenses and building simple microscopes as a hobby. Each microscope consisted of a flat brass or copper plate in which a small, single glass lens was mounted.
5. Can youmention some of his observations?
He was the first person to observe single-celled animal (protozoa) with a observe clearly and to describe red blood cells in humans and other animal, as well as spermcells.
WRITING
Complete these sentences to describe instruments
* A compass is an instrument with a wooden or brass beam and sliding sockets, or cursors, for drawing and dividing circles largerthan those made by a regular pair of compasses.
* A stethoscope is an acoustic medical device for auscultation, or listening to the internal sound of an animal or human body. It is often used tolisten to lung an heart sounds.
* A thermometer is a device that measures temperature or temperature gradient using a variety of different principles.
* A speedometer is an instrument which...
REGIONAL UNIVERSITY CENTER OF AZUERO
FACULTY OF EXACT AND NATURAL SCIENCES TECHNOLOGY
SCHOOL OF BIOLOGY
ENGLISH WORK
___________
XXXXXXXXX
MAGISTER
__________
IISEMESTER
NOVEMBER 6, 2012
ANSWERS
1. What is a microscope and what are its uses?
The microscope is an instrument that focuses light or other radiation through one or more lenses to forma magnified image of a specimen. The microscope has revolutionized the study of biology and medicine.
2. What happened between 1590 and 1610?
Magnification by simple lenses has been known fromancient times, but the development of the modern microscope dates from the construction of compound lens systems.
3. What did the Janssen do?
In 1960 Hans and Zacharias Janssen constructed asimple instrument Made of a pair of lenses mounted in a sliding tube.
4. Who was Anton van Leeuwenhoek? What did his microscope consist of?
He became interested in science when, as abusinessman, he began grinding lenses and building simple microscopes as a hobby. Each microscope consisted of a flat brass or copper plate in which a small, single glass lens was mounted.
5. Can youmention some of his observations?
He was the first person to observe single-celled animal (protozoa) with a observe clearly and to describe red blood cells in humans and other animal, as well as spermcells.
WRITING
Complete these sentences to describe instruments
* A compass is an instrument with a wooden or brass beam and sliding sockets, or cursors, for drawing and dividing circles largerthan those made by a regular pair of compasses.
* A stethoscope is an acoustic medical device for auscultation, or listening to the internal sound of an animal or human body. It is often used tolisten to lung an heart sounds.
* A thermometer is a device that measures temperature or temperature gradient using a variety of different principles.
* A speedometer is an instrument which...
Leer documento completo
Regístrate para leer el documento completo.