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How You Should Read Research Papers According To Andrew Ng Wisdom is not a product of schooling but of the lifelong attempt to acquire it.” — Albert Einstein

Researchers at Massachusetts Institute of Technology (MIT), USA, have recently discovered that placing two layers of graphene together, when rotated relative to one another at the magic angle of 1.1, turns the normally metallic material into a superconductor.

With the magic angle of twist, scientists have reported evidence of a new kind of quantum optical behaviour in similar twist-tunable stacks of other types of 2D materials. It turns out moiré effects can be obscured somewhat by an imperfect moiré pattern, which will lead to light emission similar to defects, and excess laser excitation power, which will provide a broad background.

TWISTRONICS: How Twisting Changes Properties Of 2D Materials 👉 The ability to tune properties of a layered material by varying the twist angle provides the possibility for a single material to perform a variety of functions instead of using many materials for different functions. 👉 Twistronics is the study of how the angle (twist) between layers of 2D materials can change their electrical, optical and mechanical properties. Such materials as graphene have shown to have vastly different electrical properties (ranging from non-conductive to superconductive) depending on angle between the layers.

The code is 042.

Let's have a puzzle for weekend..

Answer is 3..

Challenges with LiDAR: 👉 Can’t perform well in fog, rain, snow and dusty weather. 👉 Struggles to detect a glass wall or door, which is why smartphone manufacturers and self-driving cars makers use LiDAR along with secondary cameras and sensors.

How it works? 👉 A lidar instrument principally consists of a laser, a scanner, and a specialized GPS receiver. 👉 Airplanes and helicopters are the most commonly used platforms for acquiring lidar data over broad areas. 👉 LiDAR follows a simple principle — throw laser light at an object on the earth surface and calculate the time it takes to return to the LiDAR source.  👉 Given the speed at which the light travels (approximately 186,000 miles per second), the process of measuring the exact distance through LiDAR appears to be incredibly fast.

LiDAR- Light Detection and Ranging What is LiDAR? 👉 It is a remote sensing method that uses light in the form of a pulsed laser to measure ranges (variable distances) to the Earth. 👉 These light pulses—combined with other data recorded by the airborne system— generate precise, three-dimensional information about the shape of the Earth and its surface characteristics.

Let’s try to understand this via an example: 👉 consider a gyroscope’s axle being clamped in front of a car. 👉 In some cases, the car’s engine behaves like a gyroscope because of its mass, shape, and rotations. 👉 If the gyroscope is spinning in a clockwise direction at a fairly high speed and the car takes a right turn (as seen from the inside of the car), forces A and B are applied to the car’s body, forcing its front end down and the back end up. 👉 Similarly, if the car takes a left turn, its front end is forced up while the back end is forced down. The reverse will happen if you spin the gyroscope in the anticlockwise direction. 👉 The gyroscope wouldn’t apply any additional forces as long as you are driving in the straight direction. It only applies extra forces when you move at an angle (when you turn right/left or when the vehicle’s front/back is moved up/down).

How Does A Gyroscope Work? 👉 Mechanical gyroscopes were first invented and named by a French physicist Léon Foucault in the 19th century. 👉 These gyroscopes contained three different-size gimbals connected to each other at two points, with a smaller (inner) gimbal moving around a fast-spinning wheel. 👉 While the spinning wheel maintains its direction (due to the angular momentum), the gimbals are free to move on their axes, and their movements can be easily measured. 👉 When the wheel isn’t spinning, the gyroscope behaves like an ordinary object. When it spins at high speed on its axis, it resists movements in specific directions. 👉 As per Newton’s first law of motion, the body remains in its state of motion until an external force changes it. When a spinning gyroscope is moved, it always tries to ‘compensate’ for this movement.

What Is A Gyroscope? A gyroscope is an instrument, containing a fast spinning wheel or circulating beam of light, that is used to measure or maintain orientation and angular velocity. A mechanical gyroscope is made of four components: 1. Gimbal is a pivoted support that enables the rotation of an object about a single axis. 2. Frame (also called outermost gimbal) possesses one degree of rotational freedom. 3. Spinning Wheel is mounted on the innermost gimbal. 4. Spin Axis is the axle of the spinning wheel.

Ask each individual what the other would say. The honest twin, knowing his twin is a liar, would tell you the other's lie. The lying twin would tell you his lie. So whatever answer they give, take the other road.

Ping in your answers to @embeddedfru48

You need to get to a nearby village, and you get to a fork in the road. You know that one route will take you to the village and the other will take you down a treacherous terrain where you could very easily fall off the edge of a cliff.  Thankfully, two twins are at the fork in the road to help you, one on the left and one on the right. The trouble is, one always lies. You can ask them each one question. What do you ask to make sure you know the correct direction of the village?

Let's get back to a logic puzzle once.. This is quite a popular one.. Just give a try..