Squashed Records

Visual science, directly proportional (01/38) One of the characteristic attributes of a circle is that its diameter and circumference have a proportional relationship. Meaning that no matter the size of a circle, the proportional relationship or ratio between its circumference and diameter is always the same.

Visual science, force (02/38) Hoping on a diving board your weight applies a load, to produce a deflection; this deflection gets stored in the board that's strain energy. The board bends to the lowest point, the board pauses it's at the point of maximum displacement, this strain energy is then released and converted into kinetic energy as the board moves up, launching you upward. You and the board travel upwards, possessing both momentum and kinetic energy simultaneously due to your velocity. You ascend up in the air, your kinetic energy and momentum decreasing as they convert into gravitational potential energy, which later provides the force pulling you back down and into the water. The board itself could only travel so far up until its stiffness returned it, bringing it back down this time not so far, it moves up and down and so on vibrating in place becoming virtually still again.

Visual science, divided (03/38) Dividing cakes has never been to tricky, but larger divisions can feel like there's a cow bell going off inside your head, here's a little trick, dividing large numbers by five is in fact pretty simple! First multiply your number by two and next move the decimal point back one place.

Visual science, heat transferred (04/38) When you press your body up against another body outside in the cold, the rate of heat lost to the environment slows down because surface area exposed to the environment is less. If one is much warmer than the other, some of the heat lost from the warmer person will be harvested by the colder person until the two are roughly at an equal temperature, at that point heat losses from each person individually is lower, although this strategy only offers a practical improvement If two individuals are stranded inside an enclosed, windless environment and they lack cold-weather gear or If someone is pulled out of freezing water!

Visual science, resistance (05/38) Resistance is the barrier put up by an object to the flow of current through it. When an eel presses its chin against its victim to deliver a shock, electricity flows through the eel where the eel provides some resistance and on to the target directly, but water provides less resistance and carries electricity with ease, so if the eel's still submerged when it delivers the shock, the electricity flows through the surrounding water in all directions reducing the shock felt by the victim. An electric current flows when electrons are moving through a conductor, a more common place type of conductor would be an electric wire water is a poor conductor compared to metal. The moving electrons can collide with the ions in the metal, this makes it more difficult for the current to flow, and causes resistance.

Visual science, delta (Δ) (06/38) Delta necessarily refers to, “a change in”. Δx expresses a change in x. For instance winds bring changes in the weather, such as pouring rain or sunny skies.

Visual science, half (07/38) Halves can be very useful indeed, let's look at an example. Elements can be made of different isotopes, which are atoms with the same number of protons but a different number of neutrons. While it is the electrons that dictate how an atom behaves in chemical reactions, radioactivity and half-life are determined purely by what is happening inside the nucleus. Some isotopes are stable, which are the ones mainly seen in nature, conversely they can be unstable, and these are called radioactive isotopes which we frequently encounter in modern life through medical treatments and hospital imaging. The half-life of a radioactive isotope is the time taken for half of the atoms in a sample to decay. Because these decay rates are constant the half-life provides a way to calculate the age of objects. To work accurately scientists must assume they know the original amount of the element and that the object remained a "closed system" nothing in or out over time.

Visual science, half (08/38) The bath is half full! Ok that's it for today! If you want to hang about we are looking a little closer at baths, and thinking about extrapolation and other fun facts! When an object displaces a quantity of water that is equal to its own weight, the buoyant force acting will be equal to gravity at which point the object will float, however, if the object weighs more than the water it's displacing, the buoyant force acting will be less than gravity, so it will sink.

Visual science, minus (09/38) Minus, to take away have less of a quantity by means of subtraction. When it's minus five degrees in the great outdoors, it's five below zero or five degrees less than zero. So when you talk about negative numbers, whether that's in relation to temperature or your finances, the adjective minus always applies.

Visual science, current (10/38) Electric current is classed as the flow of electrons. Electricity is found in every walk of life, even within our body. Cells are specialized to conduct electricity contained within our bodies elements like magnesium, potassium, calcium and sodium, have a particular electrical charge. Nearly all of our cells have the ability to use these charged elements called ions to produce electricity.

Visual science, work (11/38) The mechanical energy of a bowling ball gives the ball the capability to apply a force to a bowling pin in order to displace it. Since the massive ball has mechanical energy (in the form of kinetic energy), it is able to do work on the pin. Mechanical energy can be considered the ability to do work. Work is done when a force applied to an object moves that object. Work calculated by multiplying the force by the amount of movement of an object. Interesting to note that the force carrier for the electromagnetic force is the photon.