An entire field of science is dedicated to identifying the perfect indoor temperature. And it's a lot more complicated than simply setting the thermostat to 21 degrees Celsius (70 degrees Fahrenheit).

Over 600 million years ago, sheets of ice coated our planet on both land and sea. How did this happen? And most importantly for us, why did the planet eventually thaw again? The evidence for Snowball Earth is written on every continent...

A human with the metabolism of a hummingbird would need to eat about 80,000 calories a day to survive. That’s because staying warm by making your own heat takes a ton of energy. And that brings up a paradox, because creating your own...

Somewhere between "boiling lava" and "the surface of Pluto" is the perfect shower temperature, but why is it so elusive?

In this video Paul Andersen shows conceptual thinking in a mini-lesson on simulating systems.

T
ERMS:
Simulations - imitation of a situation
or process
Interactions - reciprocal (two-way) acti
on or...

Designing skin for robots was out of reach for a long time, but last week, scientists announced they successfully made the first autonomous robot with full-body skin!

The new breed of high-tech self-monitors (measuring heartrate, sleep, steps per day) might seem targeted at competitive athletes. But Talithia Williams, a statistician, makes a compelling case that all of us should be measuring and...

Paul Andersen describes four important homeostatic loops in biology. He begins with a brief description of the elements of a homeostatic loop. He then describes how the hypothalamus helps us maintain a stable internal body temperature....

Paul Andersen introduces Anatomy and Physiology in this podcast. He starts by describing how the form of an object fits the function. He then explains the themes of homeostasis and hierarchy. He describes the four major types of tissues;...

Saving the planet and saving money go hand-in-hand when you reduce your home heating bill.

The working of an electric iron is very simple – it draws electricity from the mains and heats a coil inside. This heat is then transferred to the bottom plate, which is pressed against the clothing to remove wrinkles. It is the...

Make a thermostat-controlled evaporative cooling system using an Arduino in this fun science project.

Make a thermostat-controlled evaporative cooling system using an Arduino in this fun science project.

Thermostatic radiator traps are used in steam heating systems. They are installed in 2 pipe steam heating systems, to prevent steam passing through and returning to the boiler. We cover the basics of a steam heating system, the boiler,...

Learn how on, off control works for hvac systems and why they are used for basic controls of heating and cooling systems.

“Heating Systems” explores four major heating systems used today and explains how each functions.

The working of an electric iron is very simple – it draws electricity from the mains and heats a coil inside. This heat is then transferred to the bottom plate, which is pressed against the clothing to remove wrinkles. It is the...

This video explores the complex workings of Earth's climate and how it is changing due to factors such as greenhouse gases and ocean currents. Using virtual tools and satellite data, scientists are predicting the future evolution of the...

Variable air volume hvac system basics. In this video we look at the basics of VAV ventilation system covering vav variable air volume systems used in hvac ventilation design, vav terminals, ahu air handling units, fan assisted vav...

Learn the basics of temperature control in HVACR systems, heating and cooling system thermostat temperature control basics

How do we used deadbands to control temperature in hvac heating and cooling systems?

These Algae Curl Up Into a Ball When They Get Stressed Out

Have you ever wondered why you sweat when you get too hot from running or shiver on a cold winter's day in this video we are going to explain why your body behaves like this. Humans are endotherms and this means we are warm blooded we...

This video provides a guide to the standard circuit diagram symbols that are commonly used in physics exams. The narrator explains the components that each symbol represents and how they fit into a circuit. The video covers symbols for...