How to Measure Light Meter

How To : Use a light meter for your photo camera

This cinematography tutorial video provides the basics of working with a photographic light meter as well as how to read the meter. A light and flash meter is nothing expensive. All you need is something that will measure the light and your flash. Most light meters are relativ ...more

How To : Use a light meter to properly light a digital film

A light meter can prove to be an invaluable tool on any film set, allowing you to quickly and efficiently set lights and know the correct exposure values of those lights. Light meters were initially designed for still photographers and cinematographers can easily calibrate the ...more

How To : Use a light meter

Mark Wallace explains how to use a light meter, how it works (incident and reflective meters), and what type to purchase. Use this for still or motion cameras.

How To : Read a hand-held light meter

When reading a hand-held light meter, make sure the ISO setting is correct and point the cone of the meter toward the subject to get an accurate reading. Learn how to read a hand held light meter with the tips in this free instructional video on photography tips from a profess ...more

How To : Use a Polaris incident light meter

In this Fine Art video tutorial you will learn how to use a Polaris incident light meter. The meter has a power, mode, ISO control and a multi flash exposure buttons. On the side you have the up / down and the trigger buttons. Power on the light meter. Select the mode, say amb ...more

How To : Properly use a light meter

If you want to get a good exposure on a shot, there's nothing so useful as a good light meter. But, as useful as a light meter can be, it won't do you any good unless you know how to use it properly. Learn how with this free video photography lesson from Kerry Garrison of Came ...more

How To : Use an external or hand-held light meter

Not all cameras come with a flash, and not all cameras have the flash you need. That's where external light and flash meters come in handy for dark or low light shooting situations. In this video tutorial, learn how to usa an external flash like the pros.

How To : Measure speed of light with cosmic chocolate

Explore the universe in your microwave. Measure the speed of light with chocolate. The wavelength of light creates hot spots in the microwave that you can measure to show the speed of light. Chocolate has never been so useful.

How To : Measure the speed of light in chocolate

This tray of chocolate has been cooked in the microwave. Robert Kramf measures the distance between the hot spots that appeared on the surface of the chocolate to find the half distance between the wavelengths the microwave emits. This can be extrapolated by millions to find a ...more

How To : Measure the speed of light with a chocolate bar

All waves in the electromagnetic spectrum (light, x-rays, radio waves, microwaves, etc.) travel at the speed of light c=299,792,458 m/s. For any wave, the wavelength times the frequency yields the speed: ?? = c Microwave ovens operate by creating a standing wave inside of th ...more

How To : Test the instrument cluster on your BMW E38

This automotive video tutorial will show you how to test an instrument cluster on a BMW E38 car. IT will show you how to activate an instrument cluster test on a 1995-2001 BMW 7 Series (E38). First, you'll need to turn the headlight switch to any position, and hear the sound ...more

How To : Install No-Frills Drip Irrigation

Solving a Dilemma This is a simple how-to for a cost effective drip irrigation system for your garden. My motivation to set up my garden for drip irrigation was pretty simple. In the summer, it gets to 90+ degrees outside, and my 50’ garden hose didn’t reach the far extents w ...more

How To : Take a family portrait

Looking to get your family together somehow? Why not a family portrait? It's both a great keepsake and as an excuse to get everyone together. In this video, learn how to snap a great family portrait. You Will Need: • A large group of family members • A camera • A tripod • ...more

How To : Light a portrait for photography

Portraits come in all shapes and sizes, but follow a few basic guidelines and you'll set the scene for a beautiful and professional shot. You Will Need * Work or studio space * A camera * A tripod * A backdrop or natural environment * Lighting equipment (preferably two light ...more

How To : Set the shutter speed and aperture of a camera

When setting the shutter speed and aperture of a camera, use a light meter to take a reading, then set the aperture or shutter speed, depending on which is more important for the photograph. Set the shutter speed and aperture of a camera with the tips in this free instructiona ...more

How To : Use lighting ratios for film and video shoots

This is an absolutely fundamental concept and is important to development as a filmmaker. It's a really simple pice of shorthand that cinematographers and gaffers use to keep track of lighting setups across different shooting days. It's called a lighting ratio or a contrast ra ...more

How To : Make a cereal box spectrometer

A spectrometer is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum. This video will show you how to make a spectrometer out of a cereal box and a compact disc. This spectroscope is sure to amaze your kids for a n ...more

How To : Make sparks with steel wool, wire, and a battery

Learn how to make sparks with steel wool wire and a battery in simple steps. You will need thin steel wool, string wire, a battery with two terminals on top and scissors . First measure a meter of string wire and cut it out using the scissors. Now wrap the string wire around t ...more

News : 10 Photography Apps for Android

Giveaway Tuesdays has officially ended! But don't sweat it, WonderHowTo has another World that's taken its place. Every Tuesday, Phone Snap! invites you to show off your cell phone photography skills. Submit your best shot to our weekly competition for a chance to win an awes ...more

How To : Make an easy crab salad

Learn to make a tasty, elegant crab salad dish that's as easy as it is delicious! Add about 8 ounces of backfin cooked crab meat with any bones or cartilage removed to a large bowl. Measure 2-3 heaped tablespoons of light mayonnaise and toss gently with crab meat. Chop about 1 ...more

How To : Measure sleeve length

This video shows you how to measure the length of someone's sleeves precisely. For it, you will need a meter, and to keep your arm straight, near your body. Begin measuring from where the arm starts, where the shoulder naturally begins to curve. Measure straight down the arm u ...more

News : Paint a Mountain, Save the World

55-year-old Peruvian inventor, Eduardo Gold, was one of 26 winners of the "100 Ideas to Save the Planet" competition of 2009. His winning plan? To whitewash a mountain in order to restore it to a glacier. Some consider it a simple yet brilliant solution, others consider it fo ...more

How To : Create a thermite reaction

Obtain finely powdered iron oxide (rust), aluminum, and a thin strip of magnesium. Mix them together in a 8:3 ratio (iron oxide: aluminum) in a ratio by weight. [Note that the since aluminum is so light, it will appear that it is about a 50-50 mix by volume]. Pour the mixtur ...more

How To : Counsel with an E Meter in Scientology

Scientology Minister Marlene Coates demonstrates the E-Meter, the much discussed electronic instrument used in Scientology Counseling sessions. Ms. Coates shines the light of truth and simplicity on a much misunderstood, yet invaluable tool of the trained Scientology Practitio ...more

Eye Candy of the Day : WiFi Networks Visualized

Norwegian designers Timo Armall, Jørn Knutsen, and Einar Sneve Martinussen visually capture invisible WiFi signals by light painting signal strength in long-exposure photographs. The trio set up a four-meter long WiFi-detecting rod with 80 LED bulbs to depict cross-sections th ...more

How To : Run on a track

Running on a track might be a little repetitive, but it’s also easy, even and a simple way to measure your pace. You Will Need: * Comfortable running shoes * Athletic clothing * A full water bottle * A standard 400 meter track Step 1: Check when the track is open Check to s ...more

How To : Read a tape measure

If you don't work in construction or are a woodworking master, you probably aren't entirely sure what all those marks are on a tape measure. Sure, you probably know the basics, like there's 12 inches to a foot, but what are all those little tick marks for? Don’t let all those ...more

How To : Use the Solarmeter 6.2 for reptile habitats

In this video, we learn how to use the Solarmeter 6.2 for reptile habitats. This is the most accurate hand held meter on the market. Make sure you use UV blocking sunglasses while using this. This type of light will provide the reptile with needed vitamin D. Make sure you set ...more

How To : Easily make a potato cannon

To make a potato cannon you will need PVC piping, PVC glue and a lighter. First, apply the PVC glue to the inner rim of the gas chamber and fix the combustion chamber to it. Screw both caps onto each end of the PVC piping to seal the chamber. Take one of the lids and drill a h ...more

How To : Calculate the area of a parallelogram

Calculating The Area Of A Parallelogram A parallelogram is a 4-sided shape formed by two pairs of parallel lines. Opposite sides are equal in length and opposite angles are equal in measure. To find the area of a parallelogram, multiply the base by the height. The formula is: ...more

How To : Make lanterns out of old jars

Why buy lanterns for your backyard when you can recycle empty jars into beautiful ones? This video will show you how to make lanterns out of old jars. Step 1. Wash and dry Wash glass jars in hot, soapy water and let them air dry. Step 2. Make templates Cut templates out of ...more

News : High-Tech Tron Skate Ramp

Okay, so it's a gigantic ad. It still looks amazing. Below, a Tron Legacy skate ramp in Melbourne, Australia, created by interactive agency ENESS: "Each rider is equipped with an ipod and our custom-built app to measure their air time and trigger graphics whilst in the air an ...more

How To : Use the Digital Lux Meter for reptile habitats

In this video tutorial, viewers learn how to use the Digital Lux meter. The meter is packed in a carrying case. Begin by removing the unit and the plastic cover from the sensor. Then install the 9V battery. This device has 3 settings and has a hold function. To use it, move th ...more

How To : Lay a stone slap floor

Nuts and Bolts present how to lay a west Australian natural stone. When beginning the laying of any tile or stone, it is very important to make sure the first stone is perfectly straight. So, the first step is to measure from two walls and get the dead center of the room. They ...more

How To : Cook perfect rice

For some of us, cooking rice ain't easy. If you're getting gooey rice, you're doing something wrong... but have no fear. Cooking perfect rice is easy once you learn how. Follow these steps for light, fluffy white or brown rice every time. You Will Need: • Long-grain rice • ...more

How To : Take a group portrait

Taking a group portrait can be a pain. Here’s how to make it go as smoothly as possible. Check out this Howcast video tutorial on how to take a group portrait. You Will Need * A camera * An external flash * A tripod * A group of people * And a large room or space * Wide-angl ...more

How To : Make a pop-up card

Need a way to keep the kids busy on a rainy day? Making a pop-up card is quick, easy, and will entertain them for hours! Watch this video to learn how to make a pop-up card. You Will Need * Imagination * Colored construction paper * A pencil * A ruler * Safety scissors * Mar ...more

How To : Put in laminate floors

Vacuum the floor and make sure that the surface is clean and free from anything sticking up out of the floor. This is important so that there are no uneven areas when you start laying the laminate flooring. Roll out the under lament on the clean floor. Smooth it out so there ...more

How To : Insert a Tampon

Video: . How To Use a Tampon Buy tampons. As you've probably already seen in the grocery store, tampons come in a variety of types and sizes. Here's what's easiest for your first time: Buy tampons with applicators. Tampons come in two basic types: with applicators, or a plas ...more

How To : Check Your Heart Rate on Any Android Phone

Samsung created quite a buzz when it debuted a built-in heart rate sensor on the Galaxy S5 back in 2014, but amazingly, not many other manufacturers decided to follow suit. It's really a shame, too, since data from a heart rate sensor would go perfectly hand in hand with the i ...more

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