Sentences with phrase «measure leaf temperatures»

A straight logical proposition: tree temperature measurements measure leaf temperatures which have been shown by measurements to be stable within a certain range and not correlated strongly with ambient temperature.

The sensors are calibrated to measure leaf temperatures, allowing the plants themselves to tell computer - controlled irrigation equipment when they are thirsty.

Not exact matches

The puzzle emerged after astronomers measured the cosmic microwave background — a bath of radiation, left over from the Big Bang — and found only slight variations in its temperature across the entire sky.

Over forests, for example, the satellite measures the temperature of the leaves and branches of the tree canopy.

An array of sensors inside the tunnel, one of the largest of its kind, can measure the combustion effects of wind speed, temperature, humidity, and different fuels such as leaves, twigs, grass, and bark.

«Cold water in the left ear significantly increased patients» insight and awareness of their schizophrenia, which we measured 30 minutes after the test, compared with the sham or placebo treatment using room temperature water,» says Dr. Gerretsen.

One group, Nat Gopalswamy of NASA's Goddard Spaceflight Center in Greenbelt, Md., and his colleagues, will test a new version of an instrument called a polarimeter, built to measure the temperature and speed of electrons leaving the sun.

Researchers increased temperatures at the test plots by 3.4 degrees C, an increase that might happen by the end of the 21st century, and learned that plants grown and measured at those higher temperatures increased their leaf respiration by an average 5 percent, compared to plants in ambient temperatures.

Scientists measured how much carbon dioxide the artificially warmed plants respired — released into the air via their leaves — and learned that over time, the trees acclimated to warmer temperatures and increased their carbon emissions less than expected.

Caption: Pressure dependence of the critical superconducting temperature of a metal created by the team from CS2 molecule (top left) was measured be electrical contacts (inset in the middle) and electromagnetic coils (inset at the bottom).

The USDA recommends that these beef products be cooked to a minimum internal temperature of 145 °F (as measured by a food thermometer), and that the beef be left to rest for at least three minutes after it's removed from the heat source.

On a quick bread, like this recipe, I usually measure the temperature with a thermometer, and pull them when they reach 180 * in interior, then let them rest in the pan as she states, then dump them and let them cool, individually - they dry over nite quite a bit, if you leave them til the next am.

Teaching points that are covered in the topic are listed below: Understand that it is important to be able to grow plants well because they provide food and other items for us To know that all food chains begin with a green plant To understand the function of the parts of a plant To understand that plants need leaves in order to grow well To plan an appropriate investigation To make careful observations and measurements of plants growing To use simple apparatus to measure the height of plants in standard measures To use results to draw conclusions and provide explanations To know that water is transported through the stem to other parts of the plant To know that that plants need light for healthy growth To know that plants need water, but not unlimited water, for healthy growth To know that temperature can affect the growth of plants To ask questions about the growth of plants To plan a fair test To write a clear conclusion

Pay particular attention to the temperature scale on the left hand side — 1 cm is equivalent to 0.2 degrees centigrade — and think about what we are trying to measure — the global average temperature, all of it, oceans, atmosphere and continents.

Even if you leave climate science completely out of it and just measure extreme temperatures, the statistical record of global temperatures shows that three - standard deviation events have increased from 0.25 % of the time (from 1951 - 1980) to 10 % of the time now.

A couple of years ago I went out with my rowing boat (I live 100 yards from the sea) and took water samples in a container from various depths and measured the temperature after leaving the water in the bucket for various timings.

The spacecraft's Atmospheric Infrared Sounder, an instrument that measures infrared heat radiation as it leaves the atmosphere, is expected to provide vastly more and better temperature and humidity readings worldwide than are available now from weather satellites and other sources.

LOBET: The kids measure river temperature and make other observations, then let the separate baskets of leaves lie underwater in the current for three weeks.

The temperature is measured by the the oxygen isotope ratio, which we recently learned is the temperature of the leaves, and the leaves tend to keep a constant temperature.

Actually Fielding's use of that graph is quite informative of how denialist arguments are framed — the selected bit of a selected graph (and don't mention the fastest warming region on the planet being left out of that data set), or the complete passing over of short term variability vs longer term trends, or the other measures and indicators of climate change from ocean heat content and sea levels to changes in ice sheets and minimum sea ice levels, or the passing over of issues like lag time between emissions and effects on temperatures... etc..

Measuring with a spectrometer what is left from the radiation of a broadband infrared source (say a black body heated at 1000 °C) after crossing the equivalent of some tens or hundreds of meters of the air, shows that the main CO2 bands (4.3 µm and 15 µm) have been replaced by the emission spectrum of the CO2 which is radiated at the temperature of the trace - gas.

While this is true, leaving out regions that are not measured will allow you to see what the actual measured temperatures are.

if an object radiates to an energy measured at 20C to a shell for a sufficent time to heat it to that temperature, then the shell isn't going to be 40C because radiation leaves it bi-directionally, 20C each way.

Just before we leave you with this fascinating array of measures, and fascinating they must be because people have discussed weather and ambient temperature for time immemorial, might we just pose the questions: what is the «correct» temperature and what difference does it really make?

On a mild summer night (one estimated to be 20 degC), pre heat the slaps to the forecasted night temp of 20C and then leave them out after the sun has fully set and measure there respective temperatures every half hour.