Ancient China. We still use abacus but know it is known as a calculator. The abacus is a wooden frame with rows of wood along which beads are slid. One famous mathematician named Cheng Dawei in ancient China invented the Abacus. The abacus was invented around 2600BC by the Chinese. A typical abacus has 13 columns that are divided into two with each column having two beads on top and five at the bottom. The abacus was invented because there was a time when written numbers did not exist. The earliest
Premium Calculator China Division
investigators developed a way to rotate the motor counterclockwise by way of attaching a small magnetic bead to the motor. The F1 subcomplex was attached to a glass surface with histidine residues. The protein Streptavidin‚ which has a high affinity for biotin‚ was then used to coat the magnetic bead. The γ-subunit of ATP synthase was then biotinylated so it would bind to the Streptavidin-coated magnetic bead which could now be rotated (counterclockwise) with magnets. To determine if the counterclockwise
Premium Adenosine triphosphate Mitochondrion Cellular respiration
Experiment 3: Stochastic Events • Consider the same population of butterflies is in the path of a hurricane. All survive‚ but 10 are blown to a new location. These 10 start a new population; their progeny will reflect the founder’s gene pool. This is known as the founder effect. Materials Beaker #1 Beaker #2 Beaker #3 Questions 1. What observations can you make regarding the gene pool and gene frequency of the founding individuals? 2. Do these results vary between the populations founded by
Free Natural selection Evolution Sickle-cell disease
Hydrogen Concentration Sensor Selection for the Renewable Energy Vehicle School of Mechanical Engineering‚ The University of Western Australia ABSTRACT: This paper discusses the selection of a hydrogen concentration sensor for the use in the University of Western Australia’s Renewable Energy Vehicle (REV). Prior to selecting a sensor‚ it is important to consider the available sensing methods and the specific properties of the measurand‚ hydrogen. The selection process leading up to the purchase
Premium Sensor Oxygen Hydrogen
Imagine your dead relative in the palm of your hands‚ or taking the dead relative out with your family‚ as if it was a normal day. It may seem uncommon to hear this‚ but these are few types’ funerals that are practices from different cultures. Death is a way of life‚ and everything living will die. Over centuries many cultures have a different way of remembering the dead. Funerals play significant role of allowing people to remember the dead‚ and letting the dead move on. Let’s take a journey to
Premium Burial Funeral
PROBLEM NUMBER 1 A farmer can plant up to 8 acres of land with wheat and barley. He can earn $5‚000 for every acre he plants with wheat and $3‚000 for every acre he plants with barley. His use of a necessary pesticide is limited by federal regulations to 10 gallons for his entire 8 acres. Wheat requires 2 gallons of pesticide for every acre planted and barley requires just 1 gallon per acre. What is the maximum profit he can make? SOLUTION TO PROBLEM NUMBER 1 let x = the number of acres of wheat
Premium Optimization Maxima and minima Linear programming
The Handkerchief also goes through an almost pseudo-personification as it takes on a life of its own by acting as a sort of possessed object and rebelling against the audiences expectations by taking over the plot. When interrogating his wife about the missing handkerchief Othello explains its origin as a gift an “Egyptian to my mother give” so she could have the love of Othello’s father but this love would be lost if she ever lost it or gave it away (3.4.66). He also states that the woman who gave
Premium Salem witch trials The Crucible Mary Warren
We started out using (SMAW)‚ or better known as stick welding. Using the techniques I learned on the internet‚ I ran my first bead. From my standpoint‚ the bead wasn’t as good as the flawless welds I’d seen online‚ but others in my class were surprised. I had just started welding‚ and I was creating beads as good as them. I told myself I could improve much more‚ and each bead I ran was superior to the last. Welding soon consumed me. It was my favorite class‚ it was something I looked forward to each
Premium
Vanity Fair A Novel without a Hero (Book Report) I. Book title: “Vanity fair: A novel without a Hero” II. Author: William Makepeace Thackeray III. Theme: Thackeray wants his audience to realize how vanity itself can affect how people act. It is mainly a story about two girls with different outlooks in life; entangled in problems that neither of them could face well. IV. Main Characters: Miss Barbara Pinkerton – presiding over an Academy for Young ladies Jemima Pinkerton – sister
Premium William Makepeace Thackeray
us a better understanding of cell cycles and divisions. Methods/Procedure 5.2 Meiosis: First we obtained forty-eight red pop beads and forty-eight blue ones for a total of ninety-six. Then we used these to build a homologous pair of duplicated chromosomes each having 16 beads. Then we built a duplicate pair to match with each chromatid consisting of only eight beads. The red chromosomes are symbols of being from one parent while the blue from the other parent. Results 5.3 Differences between
Premium Chromosome Mitosis Meiosis