Tetraethoxysilane (TEOS‚ 99%)‚ chloropropyltriethoxysilane (CPTES‚ 99%)‚ absolute ethanol (EtOH‚ 99%) and other chemicals were purchased from Merck and Sigma Aldrich companies and used without further purification. Ciprofloxacin was purchased from Pars Daru Company. Preparation of modified magnetic silica NPs (Fe3O4@SiO2~Cl) Initially‚ the magnetic NPs prepared through a coprecipitation method and coated with a silica layer via a modified sol-gel method [20]. In brief‚ FeCl3.6H2O (0.036 mol) and
Premium Chemistry Water Oxygen
Title: Looking at fibres Aim: To investigate natural and synthetic fibres under the microscope. Hypothesis: I predict that natural fibres will appear rough and taper under the microscope and synthetic fibres will appear smooth. Method: Refer to text book 1‚ 2-2 fibres and fabrics. Results: Fabric sample to touch Description/observation 1. Silk Soft 2. Leather Soft 3. Corduroy Soft‚ rough underside 4. Nylon Soft‚ stretchy 5. Linen Soft 6. Wool Soft‚ rough‚ fluffy 7. Polyester
Premium Scientific method Wool Hypothesis
A microscope (from the Ancient Greek: μικρός‚ mikrós‚ "small" and σκοπεῖν‚ skopeîn‚ "to look" or "see") is an instrument used to see objects that are too small for the naked eye. The science of investigating small objects using such an instrument is called microscopy.Microscopic means invisible to the eye unless aided by a microscope. There are many types of microscopes‚ the most common and first to be invented is theoptical microscope which uses light to image the sample. Other major types of microscopes
Premium Lens Microscope Electron microscope
Guided Notes Activity Sheet Type of Microscope Most useful for viewing: Limitations of this microscope are: The microscope works by: Describe the detail that can be seen under this microscope. (You may find it helpful to draw one of the specimens viewed under the microscope.) Dissecting Microscope Organisms or objects at relatively low magnifications. You can only view oranisms that can be seen with the naked eye. It magnifys up to 40 times the size of the specimens serface by passing throught
Premium Electron microscope Electron Microscope
Introduction Using microscopes allows humans to see things they’ve otherwise would have never seen before‚ like cells. A cell is the basic unit of life. All living things are made of cells. All cells come from preexisting cells through a process called cellular division. There are two types of cells‚ eukaryotes and prokaryotes. Prokaryotes are very simple and small. They are unicellular and have no membrane bound organelles. Their DNA is found directly in the cytoplasm since they have no nucleus
Premium Cell Organelle Eukaryote
Report Learning How to Use the Compound Light Microscope Introduction: Microscope is an instrument used to grow pictures of little questions that are difficult to see with the unaided eye. The compound light magnifying instrument‚ which will be utilized as a part of this lab movement‚ is an instrument with two focal points and different handles to center the picture. In this lab‚ we will learn about the proper use and handling of the microscope. Objectives: • Show the fitting methodology
Premium Lens Optics
The Microscope FEDERICO G. PINEDA M. Sc. Associate Professor III Department of Biological Sciences‚ College of Arts and Sciences Central Luzon State University‚ Science city of Muñoz‚ Nueva Ecija The History • Many people experimented with making microscopes • Was the microscope originally made by accident? (Most people were creating telescopes) • The first microscope was 6 feet long!!! • The Greeks & Romans used “lenses” to magnify objects over 1000 years ago. The History
Premium Lens Telescope Optics
The microscope is considered one of the most useful and important scientific inventions known to ’man’. The microscope was invented by Anton van Leeuwenhoek during the seventeenth century. Leeuwenhoek was not a scientist by profession. Initally he made a living selling clothes and buttons‚ but spent his spare time grinding lenses and constructing microscopes of remarkable quality‚ such as the light microscope. The light microscope could magnify cells‚ for instance in plants so you could see a clearer
Premium Microscope Bacteria Netherlands
living maggots. The advancement of technology in the 1660’s and notably by Hooke through the microscope helps disprove traditional understanding of cell theory. The new theory states that information about cells‚ found in DNA are passed on from cell division. This understanding in the modern cell theory can be supported by the new understanding to the example already outlined. As the new technological microscopes became into use scientist were able to see the eggs of the flies passed on through cell division
Free Microscope Cell
Use pages 6C-13C of your textbook. 1. What are cells? 2. When was the first microscope invented? 3. What is a microscope? 4. What is the difference between a simple and compound microscope? 5. Who was one of the first people to observe cells? 6. What did Anton van Leeuwenhoek discover? 7. A Scanning Tunneling Microscope (STM) can magnify a specimen up to how many times? 8. What did Matthias Schleiden
Premium Cell Theodor Schwann Microscope