I gave Isopropyl alcohol 70% equal parts water, 1 tsp cayenne, and kept enough for multiday application, what little population of aphids is left I shall catch them the next morning, opening the tent 10 min before lights on the clovers have yet to open, all the aphids hiding on undersides are easily visible, still none ever went near cannabis plant. Clovers are far tastier it seems. The alcohol kills on contact, the idea was to saturate the leaves with a light foliar application, and once I was done I ran it through the canopy with my hands making sure as much of the clover surface came in contact with the iso, once done turned on the fans and evaporate it quickly. Beautiful thing about Isopropyl is that it evaporates rapidly at room temperature way below boiling point leaving behind zero residual so nothing seeps its way into rootzones unless you spill it there. It is a magical solvent that leaves no trace that it was ever there. Resonant Frequency: A resonant frequency is the natural vibrating frequency of an object and is denoted as ‘f’ with a subscript zero (f0). When an object is in equilibrium with acting forces and can keep vibrating for a long time under perfect conditions, this phenomenon is resonance. In our daily life example of a resonant frequency is a pendulum. If we pull back the pendulum and leave, it will swing out and return at its resonant frequency. Objects combine to form a system, this system can have more than one resonance frequency. The resonant frequency is termed as the resonance frequency. The phenomena of resonant frequency used in the series circuit when the inductive reactance (XL) is equal to the capacitive reactance (XC). If the value of supply frequency is changed, we can observe that the value inductive reactance (XL) and capacitive reactance (XC) is also changed. Inductive reactance (XL) and capacitive reactance (XC) are inversely proportional to each other. When we increase the frequency, the value of XL increases, whereas the value of XC decreases. When we decrease the frequency, the value of XL decreases whereas the value of XC increases. At series resonance, when XL = XC. The mathematical equation of resonant frequency is: XL = 2πfL; XC = 1/2πfC XL = XC 2π f0L = 1/ 2πf0C ; f0=1/2π sqrt{LC} Where f0 is the resonant frequency, L is the inductance, C is the capacitance How to Calculate the Resonant Frequency of an Object? An object exposed to its resonant frequency can vibrate in symphony with the sound. The wavefronts pushing on the object will arrive at just the right time to push the object with greater and greater amplitude in each cycle. To get a clear idea of this concept one of the best examples is pushing a friend on a swing. If you push the swing randomly, the swing will not move very well but if you push the swing at a specific time, the swing will get higher and higher. Another example to find the resonant frequencies is to place the object next to a speaker and place a microphone attached to an oscilloscope next to the object. Then play the sound in the speaker at a given volume, and then without changing the volume slowly change the frequency. Now observe the oscilloscope, you will observe that at certain frequencies the amplitude of the wave, is proportional to the volume of the sound that the microphone is able to pick up. The frequency that is caught by the microphone will be greater than at surrounding frequencies. These are the resonant frequencies and are detectable as the sound energy absorbed by the object is re-emitted more efficiently at these frequencies. The precise moment that constructive interference happens the amplitude of the wave will spike at the precise frequency emitted. Q: Compute the resonant frequency of a circuit whose inductance is 25mH and capacitance is 5mu F? A: Known values are, L = 25mH = 25 x 10-3 H C = 5mu F = 5 x 10-6 F Formula for resonant frequency is, f0= 1/2π sqrt{LC}1/2π√L f0=1/2 ͯ 3.14√ (25 ͯ 10-3 ͯ 5 ͯ 10-6) = 450.384Hz Why Neodymium? Ferromagnetism is an exciting phenomenon observed in certain materials, known as ferromagnetic materials, that can retain their magnetization even after removing an external magnetic field. Ferromagnetic materials can become ferromagnets and interact strongly with other magnets and magnetic fields. A characteristic of ferromagnetic materials is their magnetization ability, distinguishing them from paramagnetic and diamagnetic materials, where weak magnetism exists temporarily. This unique property allows for making permanent magnets widely used in various applications such as motors, generators, speakers, and data storage devices. The ability to generate and maintain a magnetic field without the need for a constant external source of power makes ferromagnets highly valuable. An alloy of neodymium, iron, and boron discovered in the 1980s is ferromagnetic, yielding permanent magnets over 1000 times stronger than anything ever seen before. The name neodymium comes from the Greek neos didumous, which means "new twin." Neodymium magnets are made of an alloy of neodymium, boron, and iron. This allows them to simultaneously store impressive amounts of magnetic energy while being highly resistant to demagnetization. Because iron oxidizes quickly, neodymium magnets are coated to prevent rust from accumulating. The attraction between two neodymium magnets is so strong that if placed close enough together, they can collide and shatter. Neodymium magnets have an unusually high-temperature resistance, and they can even withstand heat exceeding 200 degrees Celsius. N50UH 1-1/2"OD x 1.065"ID x 3/8"