- Видео 71
- Просмотров 3 719 528
Scott Lawson
Добавлен 8 янв 2007
A variety of science related videos from Scott Lawson.
Видео
Freshwater ciliates stained acridine orange
Просмотров 186Год назад
Freshwater ciliates stained acridine orange
Stentor (trumpet animalcule) stained with acridine orange
Просмотров 79Год назад
Stentor (trumpet animalcule) stained with acridine orange
Cyclops plankton covered in other microorganisms (microscope view)
Просмотров 3072 года назад
This crustacean was found in a freshwater pond in Vancouver, Canada. The surface of the plankton is teeming with life, as many small microorganisms appear to be hitching a ride on this creature's exoskeleton.
Large ciliate found in freshwater pond seen with microscope.
Просмотров 612 года назад
4x objective with Nikon Ti microscope. Ciliate visible moving around in a freshwater pond water sample. The ciliate is quite large, relatively speaking, at around 1mm in length. The ciliate appears to be Spirostomum.
Microscope view of rotifer found in wet moss
Просмотров 2552 года назад
This rotifer was found in a clump of moss in Vancouver BC. The imaging technique used in this video is differential interference contrast (DIC) which is why the background is blue.
moss water with nikon ti microscope
Просмотров 862 года назад
mossy water sample collected in Vancouver BC. Differential interference contrast.
Bluetooth gamepad using ESP32 and Zaber T-JOY3 joystick
Просмотров 7 тыс.4 года назад
This is a modified Zaber T-JOY3 joystick with an ESP32 and lithium battery inside. It connects to the computer as a bluetooth gamepad, very similar to how a bluetooth xbox controller works. Source code for this project: github.com/scottlawsonbc/espjoy
Incredible steel wool combustion reaction [4K]
Просмотров 18 тыс.8 лет назад
This video shows the combustion reaction of steel wool. The reaction is started by passing electric current through the steel wool. The electric current causes joule heating, which rapidly heats the steel wool to the point of combustion. The hot steel wool reacts with atmospheric oxygen to produce Fe3O4 (magnetite), a naturally occurring iron oxide. The combination of high surface area and plen...
Octopus eats a sea urchin in a tide pool
Просмотров 46 тыс.9 лет назад
This octopus was found in a tide pool in Botanical Beach, British Columbia. The octopus released an eel and swam to a nearby rock where it devoured a sea urchin. Filmed by Monique Ly with a GoPro camera.
Andrea Damascelli demonstrates a superconductor train
Просмотров 8509 лет назад
Andrea Damascelli demonstrates a superconductor train
Picomotor unidirectional ramp driver test
Просмотров 9 тыс.9 лет назад
Music playing on a picomotor piezo motor actuator using a custom slip-stick driver
RepRap Lawson 3D printer 150mm bridging test
Просмотров 1,4 тыс.9 лет назад
RepRap Lawson 3D printer 150mm bridging test
RepRap Lawson 3D printer speed test 175 mm/s
Просмотров 1,8 тыс.9 лет назад
RepRap Lawson 3D printer speed test 175 mm/s
Polyethylene 50W laser sintering test
Просмотров 1,5 тыс.10 лет назад
Polyethylene 50W laser sintering test
UBC Rapid first test of Varian Sample Preparation
Просмотров 50510 лет назад
UBC Rapid first test of Varian Sample Preparation
Incredible 3D printer bridging ability
Просмотров 60 тыс.11 лет назад
Incredible 3D printer bridging ability
Magnetic Putty Devours Magnet Time Lapse + Reverse HD 1080p
Просмотров 37 тыс.11 лет назад
Magnetic Putty Devours Magnet Time Lapse Reverse HD 1080p
Minimum and Maximum Values Using Lagrange Multipliers
Просмотров 30 тыс.11 лет назад
Minimum and Maximum Values Using Lagrange Multipliers
UBC Engineering 'Fun With Science' Sodium Explodes over a building
Просмотров 94312 лет назад
UBC Engineering 'Fun With Science' Sodium Explodes over a building
UBC Engineering 'Fun With Science' Potassium Nitrate and Magnesium
Просмотров 98512 лет назад
UBC Engineering 'Fun With Science' Potassium Nitrate and Magnesium
UBC Engineering Sodium Exploding in Water
Просмотров 1,2 тыс.12 лет назад
UBC Engineering Sodium Exploding in Water
Scott Lawson's Science and Engineering Channel
Просмотров 2,9 тыс.12 лет назад
Scott Lawson's Science and Engineering Channel
Bro making tony stark power core type sh!t
I don't like the mixing up of co-ordinate notation with vector notation. A co-ordinate is not a vector, and vice versa. t(a, b, c) is a little meaningless when you think about it.
Nice video. How did you prevent the organisms from suffering phototoxicity? Are you using an ND filter to cut down the amount of light? Or some other method. I'm just starting. My organisms stained with AO die within seconds.
Gosh after struggling to still understanding this concept and how to do it properly by two TAs in my lab this video finally cleared my confusion ToT! Thank you so much! I struggled with partial derivatives but you made this explanation so easy to understand ^_^
This was great but you forgot to turn your dog whistle off
This is all descriptive and nothing intuitive. Time was spent on typing and repeating well known statements, nothing new, nothing inspiring. Sorry mate, i need to be truthful.
I found this because I wanted to know if octopus can eat urchins, now I just have more questions
автор пидор-ДИЗЛАЙК!!! МЫ ПЕДИКОВ НЕ ЛЮБИМ!!!
7:00 why do that ? when you multiplied the numbers, you can't solve y and z because they don't eliminate. Right now its -3z and +3z in each equation. Use elimination (so substitution) and add those equations for x=0. You can find a precise point of the line when you make x=0, add line A and B, the 3z cancels, and youre left with y=-16. Then put y=-16 into either equation, you're left with z=-26, so now your vector is x,y,z=(0,-16,-26) (a starting point but any starting point would do) + t(3,15,23) (your position vector from n1xn2), or written parametrically. x=0+3t, y=-16+15t, z=-26+23t. When you doubled the number, you have not eliminated y/z from the equation...the number is irrelevant.
This was pretty helpful. We were told to build formulas for finding the uncertainties without having a clue of what to do.
Thank you! this was very helpful. I had a difficult time grasping the concept and this video explained it very well.
Bagaimana cara membuat nya...
Thank
THANKS. A. LOT.
I've been almost in tears for basically 3 hours trying to understand this - this is just what I needed. Thanks man
Something that feels weird when doing this is that the equation for a plane and the equation for a line are in completely different forms. One is an implicit equation constraining three variables, the other is an explicit function of 1 input. The plane equivalent of the equation of a line given feels like it should be a point and two vectors. (Of course I may have an unorthodox perspective after seeing the line intersection between two planes gotten by a single multiplication of the planes in question.)
Ok... so i get this is 10 years old but... i just stumbled upon this and now i can stop telling people i have "videographic memory"... I NEED MORE CONTENT ON THIS... PLEASE!!!
what happened to the guy in the gray sweatshirt?
thanks man
This method could get a bit confusing if you forget to remember octa- refers to the shape of octahedron, the 6 vertices being the position of each atom, octa doesnt refer to 8atoms but 6
Very informal thanks!
thank you man
Wooooah so green!
Such a brilliant intro & video 🥰❤️😍. Pls keep it up.
Crystal clear
although 9 years has passed, you still saved my life before a midterm
thank you so much, u literally saved my life today LOL
big gen Chem 2 test this week huh
Is it possible to stream from raspberry pi to esp module?
Well captured! However, this is not a nematode but a ciliate. Very likely from the genus Spitostomum (I have a video in it so you can compare!)
Oh really! Thank you so much for pointing that out!! This is only the third time I've looked at pond water and so I'm very new to identification. I thought this must have been a nematode because of how large it was, around 1mm. I noticed other similar shaped microbes but of much small size, at least one is visible in this video. Could a ciliate be as large as a 1mm?
At 18s near the bottom middle of the screen, there is a much smaller microbe visible. Do you know what this one is?
You're right this looks like Spirostomum and wow they can be big.
@@ScottLawsonBC yeah ciliates from the genus Spitostomum can get pretty big. Spitostomum ambiguum can get up to 4mm in size which is very impressive. From these shots I can't tell you exactly what organisms is at 18s but according to it's movement it seems to be another ciliate. You can't see enough to classify it properly though. Hope that helps anyway ;)
Very well captured! DIC is excellent for pond life :)
Thanks sir..👍❤️
The entropy of isothermal process for both compression and expansion is the same right ?
Very helpful! Thanks!
The opposing emf produced by an inductor is a characteristic of the non-Coulomb electric field that is proportional to the rate of change in current causing a changing magnetic field. And that is Faraday's Law. The current is a result of the combination of an opposing Coulomb electric field and the applied field which is changing the current. The opposing Coulomb field is a result of polarization of the inductor by the non-Coulomb electric field. So, the current is a consequence of the resultant field of the applied field and the Coulomb electric field in the inductance coil and is determined using the governing relation in conductors J = σE_net. It is not possible in this post to discuss in more detail the formation of the Coulomb field when the current in an inductor is changed. Before learning Faraday's Law and its application to the operation of inductors, it will be instructive to understand Current, the conduction process and Voltage at the fundamental level as in the following two videos: i. ruclips.net/video/TTtt28b1dYo/видео.html and ii. ruclips.net/video/8BQM_xw2Rfo/видео.html The last frame References in video #1 lists textbooks 3 and 4 which discusses topics on inductance and inductors in more detail using a unified approach and provides an intuitive understanding of inductive reactance. It also describes with sequential diagrams how an inductor develops the induced emf. Textbook 4 shows how the current lags the voltage across the inductor by 90 degrees for sinusoidal input voltages using sequential diagrams.
thanks scott I will have a go at this project
HELLO, I AM HERE TO CORRECT THIS VIDEO. So, all the questions in the comments are talking about the squared deltas. This is wrong. The /ONLY/ mistake in this video is the partial derivatives. NONE of them should be multiplied by the delta he has. His first partial: dP/dR = A / L , that's it. There is no deltaR in that partial derivative, because the derivative of R is 1, not the uncertainty. His second partial: dP/dL = R*A / L^2. The derivative of 1 / L is -1 / L^2. His third is the same reasoning as the first. That's it. Fix those partial derivatives, plug them back into the formula, and you're golden.
Thanks , respect from india ❤️
What do you think of improve your intelligence using Rotogenflux Methods? I see many people keep on talking about Rotogenflux Methods.
Hi there, I want to know if Rotogenflux Methods, will work for me? I see a lot of people keep on speaking about this iq course.
Thank you,Scott. Finally I made my audio reactive led strip work on a completely new raspberry Pi OS.
I've been frustrated on the python program installation for days,now everything is working. Thank you for your video. Keep posting in your channel.
How to be sure that the intersection line is not parallel to the x-axis?
It's still amaze me just how a number of people do not know about Rotogenflux Methods despite the fact that a lot of people improve their intelligence with it. Thanks to my personal friend who told me about this. I have improve my IQ in a short period of time.
Has anyone used the Rotogenflux Methods to increase your IQ of 23 points? Simply just do a search engine search. On there you'll find an awesome suggestions about how you can increase your IQ score over 17 points. Why don't you give it a shot? maybe it is going to work for you too.
any tutorial on setting it up for PC ... i didt understand well frm Github. NOOb
What were you doing during 8 min ~9 min over an equation group? If you hold x=0, you’ll find 3z and -3z can offset each other and find y=y=-18 in no more ten seconds. Your twisting calculation made me like a scratch cat.
H2O has two lone pairs. Can this please be corrected.
What software do you use?
Visualization is working but nothing happening in led i am pissed off now
Which ESP are you using?
Ehmm... read the title and search for it on amazon. Only one which looks like this.
@@tranceonline I know it is an ESP32, what I meant was which board, such as the Sparkfun Thing, or the Espressif from Adafruit, the HiLetgo, the D1 Mini, etc.. Also, still really cool, I'm just curious, as I am looking at making a Switch controller.
@@tranceonline as for boards that look like it, there's multiple, such as the HiLetgo, the KeeYees, and the MakerFocus. They won't all have the same firmware, or charge circuit.
Quite helpful