casthoogl.blogg.se - Wireless slide advancer with changeable frequency

If new evidence is discovered that the theory does not accommodate, the theory is generally modified in light of this new evidence.Īlignment agreement: Thanks for your feedback! This lesson focuses on the following Three Dimensional Learning aspects of NGSS:Įvaluate the claims, evidence, and reasoning behind currently accepted explanations or solutions to determine the merits of arguments.Īlignment agreement: Thanks for your feedback! A scientific theory is a substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment and the science community validates each theory before it is accepted.

Evaluate light attenuation through different mediums.Įvaluate the claims, evidence, and reasoning behind the idea that electromagnetic radiation can be described either by a wave model or a particle model, and that for some situations one model is more useful than the other.Ĭlick to view other curriculum aligned to this Performance Expectation.

Compare and contrast tinted and polarized glass.

Calculate the light intensity when two polarizing films are used.

Similar to how engineers are investigating and testing to learn more about radio/microwaves to accomplish this task, through this lesson, students learn about light properties to help them design and refine new types of sunglasses in the associated activity.Īfter this lesson, students should be able to:

It also has a very small cell coverage area, which increases the need for antennas and cellular stations. The millimeter wave, as waves with this frequency are called, is prone to large attenuation (reduction in power) as it travels through walls and even human bodies. The plan is to add frequencies in the 28–64 GHz range, which are not yet used in data streaming because of some limitations in their wave characteristics.

For instance, engineers are currently trying to broaden the telecommunications spectrum and increase bandwidth to accommodate the rise in data streaming applications. This engineering curriculum aligns to Next Generation Science Standards ( NGSS).Įngineers begin design challenges by learning about relevant science and math concepts in order to fully understand the problem. Students also brainstorm ideas on how sunglasses could be designed and improved, which prepares them for the associated hands-on design/build activity.

Two math problem student handouts are provided. Students use the Malus’ law equation to calculate the transmitted light intensity and learn about Brewster’s angle. As a mini-activity, students manipulate slide-mounted polarizing filters to alter light intensity and see how polarization by transmission works. A demo using two slinky springs helps to illustrate wave disturbances and different-direction polarizations. Through a PowerPoint® presentation, students learn about light polarization, transmission, reflection, intensity, attenuation, and Malus’ law. They compare and contrast tinted and polarized lenses as well as learn about light intensity and how different mediums reduce the intensities of various electromagnetic radiation wavelengths. Students learn about the scientific and mathematical concepts around electromagnetic light properties that enable the engineering of sunglasses for eye protection.