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Isaac Newton's contribution to science
Sir Isaac Newton contributions
Sir Isaac Newton contributions
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The project that we chose, measuring the velocity of different types of incidents involving blood splatter, falls under the category of Physics. Hence the use of the equation V=ΔD/Δt .
We tested an apple being dropped from a constant distance of 2.4m above the ground, this was used as a representation of a person falling from a high distance. We also tested a blood-like substance being dropped from a medicine dropper from a constant distance of 1.5m above the ground, this was used as a representation of a simple nose bleed.
Velocity was discovered by Sir Isaac Newton, an English natural philosopher. He is best known for his three laws of motion and law of universal gravitation, with regard to the formula F=GMm/R
The velocity of blood splatter plays a big role in the type of splatter made, this can also be linked to a specific incident/ injury.
Blood is a tissue that is circulated within the body to assist other parts of the body. This connective tissue has specialized cells that allow it to carry out its complex functions
Blood stain analysis falls into forensics science, the study...
Each system, as noted early, contributes to reversing cause of shock in this phase. The first of this will be seen when cause of shock is from hemorrhage and significant blood loss from the body, and all components of the hematologic system, or from blood, has its own function as a response (Kolecki “Pathophysiology”). The body’s process of quickly locating and slowing down bleeding within the body is called hemostasis. As soon as a blood vessel is broken, both the liquid and solid components within the blood effect how the body responds (Tortura 703).
Bloodstain Pattern Analysis is a forensic discipline which, among others, the position of victims can be determined at crime scenes on which blood has been shed. To determine where the blood source was, investigators use a straight-line approximation for the trajectory, ignoring effects of gravity, drag and overestimating the height of the source. We determined how accurately the location of the origin can be estimated when including gravity and drag into the trajectory reconstruction. We created eight bloodstain patterns at one meter distance from the wall. The origin’s location was determined for each pattern with: the straight-line approximation, the method includes gravity, and the method we use includes both gravity and drag. The latter
In order to find out that a particular weapon is responsible for the damage caused, then simulation experiments may be required. If a weapon is given, then simulation stab-cut, slashes should be examined in test clothing and the characteristics created is compared to the ‘crime scene’ damage.
Projected blood spatter, will produce 1.0ml of blood and this is a minimum. A lot of this type of spatter will resemble spine shaped stains that emit from a central area of blood. (James, Kish and Sutton, 2005)
Blood is a specialized body fluid that delivers necessary substances to the body's cells — such as nutrients and oxygen — and transports waste products away from those same cells. It can be referred to as a liquid connective tissue. It consists of solid elements made up of RBCs, WBCs and platelets (commonly referred to as the formed elements of the blood), suspended in a fluid medium, plasma which contains, water (about 92%), dissolved proteins, lipids, glucose, mineral ions, hormones, organic acids, urea and other wastes,
The Mayo Clinic defines a blood transfusion as “a routine medical procedure in which donated blood is provided to you through a narrow tube placed within a vein in your arm”. The first human blood transfusion on record was conducted by Dr. Jean-Baptiste Denys, a French physician during the late 1600’s. Although Denys’ transfusions weren’t sound proof and often written off as unorthodox, he unknowingly ushered in a new era of medicine and laid the foundation for modern advances in Hematology. I choose this topic because I volunteer to donate blood four times a year alongside thousands of other people. On average these donations help save 4.5 million Americans that would die in a years’ time without a blood transfusion. These generous people
Low-Velocity impact spatters are caused by blood that drops normally or perpendicularly due to gravitational interference and have the largest diameter compared to Medium-Velocity impact spatters. The bloodstains sources are usually open wounds of victims who are sustaining their injuries and surfaces full of blood. Low velocity impact spatters are circular bloodstains with a diameter of not less than 4mm. Increase in distance from the surface, increases the diameter of the blood. However, the increase would remain constant at about 1.2m from the surface. Low-Velocity Impact Spatters were created by drops of blood that travel less than 1.5m/s. Low-Velocity Impact Spatters can be caused by sustaining an injury from blunt objects. Medium-velocity
In order to reconstruct a crime scene, analysis must classify the bloodstain spatter, and there are many way to classify blood stain patterns: bloodstain spatter by velocity and bloodstain through taxonomy. In the classification of the bloodstain spatter by velocity, there are three basic categories of stain groups...
In this term paper, I will be relating projectile motion to personal experiences, movies, TV show, and Previous knowledge.
Blood stains are one type of evidence that can be found at a crime scene. Blood that is still in the liquid form should be picked up on a gauze pad. Once the blood is dried thoroughly it should be refrigerated and sent to the Laboratory (Andrus et al., n.d., para. 1). If the blood stain is found dried on clothing, the officer should wrap the piece of clothing in clean paper and place it in a sealed and labeled container. An object with dried blood stains needs to be sent to the Laboratory if it is small enough. If the object is too large to send, then using a clean knife the stain needs to be scraped onto a clean piece of paper, which then can be folded and placed in an envelope (Andrus et al., n.d., para. 2). When collecting autopsy blood samples, the officer should request that the pathologist obtain the sample directly from the heart and place it in a yellow or purple stoppered vacutainer. If the victim is still alive but in serious need of a blood transfusion, then the pre-transfusion blood sample needs to be obtained promptly before the hospital discards it (Andrus et al., n.d., para. 4). It is important for the Laboratory to receive all blood samples within 48 ho...
Blood transfusions are potentially life-saving procedure that can help replace blood lost due to surgery or injury. Every two seconds someone in the United States needs blood (Blood Facts 1). Blood has been used as a form of therapy for a variety of ailments dating back as far as the 17th century. There is no question that blood is an incredibly valuable resource. Over the years, there have been several significant advances made in not only the research of blood but also medicine. The history and research of blood transfusions has brought the discovery of blood types and the incompatibilities of said blood types.
it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the
A small drop of venous blood is placed on a glass of microscope slide, using a disposable pipette. Used a wooden applicator stick for this purpose
Our blood is able to connect all our organs together to create one organism and is able to transport the most vital and important molecules through these blood streams. Hence, blood cells are needed for immune system function and metabolic functions.
Sir Isaac Newton is the man well known for his discoveries around the term, Motion. He came up with three basic ideas, called Newton’s three laws of motion.