The nerve impulse The information is transmitted by polarity changes in the membranes of cells due to the presence of neurotransmitters that alter the ionic concentration inside the cell. Moreover‚ inside the neuron proteins and ions are negatively charged . This difference in ion concentration also produces a potential difference between the outer membrane and within the cell . The value reached is about -70 millivolts (negative inside with respect to the value of positive charges outside
Premium Action potential Neuron
used to calculate heat transfer UA value and the effectiveness of the heat exchanger respectively. The report begins with the introduction into the experiment and gives a detailed account of the background behind heat exchangers and especially the shell and tube heat exchanger. This is followed by the list of objectives of the experiment‚ telling exactly what was expected from the laboratory and what information we wanted to gather from the experiment. The theory section explains the logic behind
Premium Heat transfer Heat exchanger Heat
Technology based laboratory to improve science learning Abstract Till date‚ manual routine devices and methods are used to perform different test strategies in the greater part of the science research centers in our nation. The manual instruments are cumbersome though the robotized ones are expensive. It does not enthuse youthful analysts towards the science laboratories. There is a need to create applications which can be easily integrated‚ customized in school and undergrad level laboratories and are prudent
Premium Computer Artificial intelligence Human
Experiment 1: Errors‚ Uncertainties and Measurements Laboratory Report Abstract The success of an experiment greatly depends on how the group is able to execute it and how precise and accurate their results are. In this matter‚ errors and uncertainties in measurements are of great factor. In this experiment‚ the group was able to classify the causes of such errors and which measuring device is more precise and accurate than the other. These were obtained by measuring the diameter of an iron sphere
Premium Measurement
Laboratory Report: Flame Colors of Metals Abstract The experiment about flame color of metals demonstrates how electrons jump into their excitedstate from their ground state as it came in contact with heat. As it return to its lower energy state‚it emits the absorbed energy in the form of light. A platinum or nichrome wire was dipped into aconcentrated HCL and was heated to clean it. The wire was dipped into different salt solutionsand heated in order to determine the metallic ion’s color and wavelength
Premium Atom Potassium Metal
Optic Nerve The optic nerve is located in the back of the eye and is also called second cranial nerve and cranial nerve II. the optic nerve is to transfer visual information from the retina to teh vision centres of the brain via electrical impulses. It is made up of ganglionic cells or nerve cells and consists of more than 1 million nerve fibres . Our blind spot is caused by the absence of specialised photosensitive/light-sensitive cells or photoreceptors; the part of the retina where the optic
Premium Retina Eye Brain
Non-human Animals as Laboratory Specimens In Biology‚ it is said that humans has a natural characteristic to consume materials and energy in able for us to pursue the various activities that we encounter in life. This is one of the characteristics that we have as living things. Humans acquire materials and energy through the consumption of food. We‚ however‚ do not naturally produce our own source of materials and energy from within us. Our species need an external source which is our environment
Premium Human Human Science
Experiment 4 - Observations of chemical change Data Table 1: Reactions Expected | | Well #/ Question | Chemicals | Reaction | | | | A | NaHCO3 – CO2 | It creates bubbles‚ it keeps uncolored | B | HCl and BTB | It changes to a strong yellow liquid | C | NH3 and BTB | It changes to blue liquid | D | HCl and blue dye | It changes green. | E | Blue dye and NaOCI | it first is blue and after add the HCl creates several colors‚ which are yellow‚ blue and green | F | NaOCl and KI
Free Acid Chemistry Purple
An Iranian General believes they are being set up‚ maybe by Israel. They struggle with deciding to attack first or not. CNN covers the attacks‚ but makes a decision to report only cleared information. The US finds evidence of a chemical lab in Iran. Sarah fears that Muller will take the world down with the “Samson Option‚” a last resort‚ nuclear attack. Sarah contacts KING HASSAN of Jordan for information and evidence
Premium Al-Qaeda September 11 attacks World Trade Center
Laboratory Techniques & Measurements Observations from Procedures Data Table 1 – Length measurements Object|Length (cm)|Length (mm)| CD|12|120| Key|5|50| Spoon|17|170| Fork|19|190| Metric Ruler|30|300| Data Table 2 – Temperature measurements Hot water from tap (44ºC )|Boiling water (70ºC)|Boiling water – 5 minutes (100ºC)| ]111.2 F|158 F|212 F| Cold water from tap (24ºC)|Ice water (5ºC)|Ice water – 5 minutes (0ºC)| 75.2 F|41 F|32 F| Data Table 3 – Mass measurements
Premium Water Temperature Fahrenheit