Laser-Assisted in Situ Keratomileusis Eye Surgery Audience: My audience is people in their 20’s with nearsighted vision. Purpose: My purpose is to convince people that LASIK is a healthy and safe fix to wearing glasses and contacts. Chris Sebastian once said‚ “My eyes are my favorite part of me- not for how they look‚ but for how they see.” Laser-assisted in situ keratomileusis‚ or LASIK‚ is an eye surgery to correct vision in which a laser reshapes the inner cornea. LASIK can be an excellent
Premium Contact lens Ophthalmology
goes along the abdomen to the anus. The ventral nerve cord runs vertically down the body. The crayfish brain is behind the esophagus interior dorsal side. Materials: goggles‚ gloves‚ Lab apron‚ zip lock bag‚ dissecting tray‚ scissors‚ forceps‚ probe‚ and preserved crayfish Procedure: External: 1. Put on safety goggles‚ gloves‚ and lab apron 2. Place the crayfish on its dorsal side in the dissection tray locate the cephalothoraxes‚ abdomen‚ carapace‚ cervical groove‚ head‚ thoracic
Premium Abdomen Arthropod Nervous system
Edexcel GCSE Additional Science Unit ASCA: Additional Science Controlled Assessment Controlled Assessment Task C2 Valid from June XXXX to May XXXX Paper Reference(s) 5SA04/01 Chemistry Unit CCA: Chemistry Controlled Assessment Controlled Assessment Task C2 Valid from June XXXX to May XXXX Paper Reference(s) 5CH04/01 These controlled assessment tasks are valid from June XXXX to May XXXX. • For assessment in January XXXX centres must submit their moderation sample(s) by 10
Premium Sodium hydroxide PH Chlorine
Rate of Reaction Experiment Introduction : in this term in chemistry class I was learning about rate of reaction. As defined by the Britannica encyclopedia‚ a chemical reaction is a process where one or more substances (reactants) are converted to one or more different products because of the rearrangement of atoms of the reactants. For the reaction to occur‚ the particles must collide with each other and in order to succeed there must be enough energy for the collision because a collision with little
Premium Chemical reaction Reaction rate Chemistry
Task 3 For part of this task‚ I gathered information from a technician that works in the science department. This enabled me to gather primary information‚ giving me a basic understanding of the storage and practices within the lab before researching them on the internet. Chemical store management When storing chemicals‚ they are put into different categories‚ for example; flammables‚ corrosives‚ irritants etc. All of these different categories are stored in an external store. They are stored externally
Premium Chemistry Experiment Water
at lowest levels • Deployment to incidents world wide within 24 hrs • Air supremacy The United States Army is heavily outfitted for combat in foreign wars. We are still one of the few nations in the world were every Soldier is issued night vision goggles. Infantry squads (6 infantry men) are issued a desert hawk (miniature Unmanned Aerial Vehicle) that can be unpacked from a briefcase and thrown in the air to monitor 4 city blocks from the sky. These advances in technology give the United States Army
Premium United States World War II United States Army
Introduction Energies are many folds‚ they are available naturally‚ and are also made available through science and technology in different ways‚ intended for the purposes we desire. This light that enables us to see‚ the x-rays (which gives us pictures of bones and soft tissue)‚ the gamma and ultraviolet rays (which are used for sterilization)‚ infrared‚ the microwave (microwave ovens and cell phones)‚ radio waves‚ extremely low frequency waves etc. are all packed in the radiation that emanates
Premium Ionizing radiation Gamma ray Radioactive decay
* Aim of Experiment: * To investigate the effect that emersion in salt solutions has on imbibition in kidney beans. * Safety Considerations: * One must use extreme caution when working with chemicals. Always wear protective goggles and gloves when handling them. KCl is slightly hazardous in case of skin contact‚ eye contact‚ ingestion‚ or inhalation. In case of eye contact‚ immediately flush eyes with plenty of water for at least 15 minutes. Seek medical attention if irritation
Premium Chemistry Oxygen Chlorine
Acid and Bases 1 Determining Acids and Bases SNC-2D1 April 02‚ 2013 Acid and Bases 2 Purpose The purpose of this chemistry lab is to investigate and find patterns/tendencies between substances Introduction An acid is a solution that has more free hydrogen ions (H + ) than hydroxyl ions (OH - ) and a pH less than 7. A base is a solution that has less free hydrogen ions (H + ) than hydroxyl ions (OH - ) and a pH of more than 7. In the late 1800s‚ the Swedish scientist Svante
Premium PH indicator PH Acid
To begin the experiment‚ the unknown needs to be determined as an acid or a base by using litmus paper or a pH strip. For the rest of the experiment‚ if the substance is being handled‚ gloves and goggles must be worn. Use a clean and dry Erlenmeyer flask and weigh it. Then‚ some of the unknown will be measured and poured into the flask. Also way the flask and the unknown. Add distilled water and phenol saline to the flask. Set that aside to prepare the biuret. Choose the substance that will be used
Premium Chemistry Chemical substance Oxygen