Electromagnetic radiation

All Colors of the Visible Spectrum Grow Salvia Splendens More Efficiently than Red or Green Light on Its Own By: Diego Prado, Morgan Miller, Cody Holland, and Jonathan Ruppel Introduction The hypothesis for lab 5 was that plants that do not receive red light will perform photosynthesis less efficiently than those exposed to light of all wavelengths. The findings for that lab were that the plant that received all colors grew the most. The experiment was done again, but this time the algae was…

Rosseland Radiation Model The Rosseland Model (Diffusion approximation model) is applicable when the medium is optically thick i.e. the optical thickness is much greater than 1 where a is the absorption coefficient of the medium, σ is the scattering coefficient of the medium and L is the average path length. The radiative heat flux is approximated as [3], (2.13) where qr is the radiative heat flux, Γ is the radiative diffusivity and G is the incident radiation. In contrast to the P-1 model…

The term photoluminescence by definition can be refered to as a molecule or atom which absorbs electromagnetic energy and in turn, emits light.In quantum mechanics, it is where excitation to a higher energy state occurs, which then returns to a lower energy state, together with the emission of a photon. According to Seitz (2006) found in the Credo referencing database, “Photoluminescence excitation spectra are determined by measuring emission intensity at a fixed wavelength while varying the…

Acoustics is the branch of physics concerned with the study of sound. Sound is a wave made of vibrations in the air. Waves can be measured in a range of different ways: by their amplitude, wavelength, frequency, speed, and, at times, their phase. Sound information is transmitted by the amplitude and frequency of the vibrations, where the amplitude is experienced as loudness and frequency as pitch. The vibration is started by some mechanical movement and this causes a vibration on the molecules…

Introduction A wave is a repeating disturbance or movement that transfers energy through matter or space. Waves are caused by vibrations. There are two types of waves, transverse, and longitudinal waves. The moving particles in transverse waves travel at right angles to the direction of transverse. Some examples of transverse waves are light waves and radio waves. A longitudinal wave is also known as a compression wave. The moving particles move back and forth in the same direction as the wave.…

Crazy Fact: Our every decision and its probable outcomes manifest. Perhaps, not here, but somewhere... This means the most improbable scenarios are bound to run their course in a distant universe extremely different or remarkably unrecognisable from our own. Light creates space, wherein it indirectly generates time. On a universal scale, our the sum of thoughts, words and actions churn the wheel of Karma. (The Moral Principle and/or Spectrum of Cause & Effect) Time progresses in accordance…

In 1905, independent Danish astronomer Ejnar Hertzsprung and American astronomer Henry Norris Russell gathered data of a star’s spectral type and there temperature. They plotted these data on graphs and discovered that many patterns emerged linking the mass of a star to its lifespan. From the noted trends and correlations they formed what is now known as the Hertzsprung Russell Diagram or commonly referred to as the HR Diagram. The HR Diagram is used as an important tool in the study of…

Synthetic Dye Assignment Dye: Sunset Yellow FCF Caitlin Walker Sunset Yellow FCF, more commonly known as Yellow 6, is an orange azo dye3. This dye is petroleum-derived and its absorption is dependent on the pH. Minimum absorption occurs at 480 nm with a pH of 1 and maximum absorption occurs at 443 nm with a pH of 13. Sunset Yellow FCF is soluble in cold water2. Sunset Yellow FCF has the following structure (Figure 1). Sunset Yellow FCF is commonly used in food, cosmetics, and drugs. It is…

Conventional methods of teaching are loathed for their intention of manipulation & control. Having seen through something of ourselves that we do not seem to trust, Education itself is a process, where the subjects’ (students) potential is being stimulated; curiosity gets directed towards their self-actualizations. This can be achieved via a single approach that conducts teacher-centered teaching, alternatively doable via multiple approaches such as self-supervised learning, which seems…

Light is part of a continuum of radiation or energy waves and the relationship between light wavelength and energy is inversely proportional: the shorter the wavelength the greater the damage to living organisms caused by them (e.g. X-ray wavelength is between 0.03 and 3 nanometers while…