first, conduction then convection. convection is what, gang? convection is the moving of fluids. for example, if you heat part of your bathtub up, pretty soon this part is hot, too. a little conduction going on there, but mostly the water is kinda moving around in currents. and so when you carry heat from one place to another by virtue of currents in a fluid, we just have a name for that, convection. and it has an enormous-- a lot to do with the climates of the world. isn't that true? convection. so we get convection currents. you hear that term a lot. it turns out that warm air, when warm air rises, warm air rises-- somethin' happens to the warm air when it rises. do you know, guys, do you know why that warm does rise, by the way? if you're paintin' a ceiling and you're all the way at the top paintin', you'll find out it's a lot warmer at the top of that ladder than if you're laying tile on the floor. then someone says, "how come it's so warm up there?" "oh, it's warm up there because warm air rises." somebody say to you, "well, how come warm air rises?" and you, "well, it's--wa

convective instability. notice the temperature drop. no more 70s.s a good snow-producing storm for the see area. probably a foot of snow there. much needed half inch of rain or so. more showers in thursday. we're going to clear out and warm up just. >> time. things improving. we can use every bit of snow we can get. it's tough to get a good snow producing storm like we're seeing. >> when you call it the main event, that's what it's going to be. >> thanks for watching nbc bay area news. n b kr ni"nbc nightly news" is then nbc bay area at 6:00 including update on the high-speed chase. the chase ended when police shot and killed the man at 3:30 this afternoon. nbc's kimberly tere is live at a news conference. we'll bring you the latest at 6:00. we hope to see you then. thanks for joining us. now? on this first day of deep federal budget cuts? tonight as the broad impact hits home the finger pointing continues. on dangerous ground. the neighborhood on edge as a large sinkhole expands after swallowing a man as he slept. >>> at risk? new research on using

the cool air above and the warming below, the sunny breaks tomorrow, this is the fire power for convective showers which could get intense at times. with the heating of the day tomorrow you will see those showers around the higher elevations, the hilltops of the north bay and east bay. i think by monday we'll see the showers just in the higher hilltops as things dry out as we head into the first half of the week. rain projections all over the place. if you find yourself near a thunderstorm, you could pick up a half inch of rain like in napa. other locations seeing just enough to wet the ground. an opportunity to need the umbrella at times all the way until sunday evening. this is a fairly warm system. you will notice the snowfall of the sierra, 7,000, 8,000 foot snow levels. maybe an inch or two of fresh powder in the high country. cooler tomorrow around the south bay. down from the mid 70s for the tri valley tomorrow. highs in the mid to upper 60s. cooler around san francisco and the north bay, temperatures fairly close to today. low to mid 60s for today. about the same there tomorrow. th

it's the sunshine coupled with the moisture below and cooler air aloft that will set us up for convectivehowers. overnight a few sprinkles or light rain showers, and watch what happens as we head toward the afternoon. notice the showers popping up around the diablo range. that is what we refer to as solar powered showers. the sun destabilizes the atmosphere, but as soon as the sun sets, things calm down. sunday into monday it looks fine, but the timing now, speeding up on this tuesday system, watch what happened. tuesday morning commute looks like, but here comes more widespread rain. this is the major system we'll see for tuesday night into wednesday. the system for tonight, probably bringing maybe as much as a tenth of an inch of rain. the bull's-eye sees -- some places may miss out with this first system. sierra getting a bit of snow, but above 6,000 feet, it's the tuesday night into wednesday that will bring us a chance of a foot of snow. low 60s to wrap up the weekend, so today's 70s will be out the window. cooling off a bit tomorrow even with the sunshine. 63 around santa rosa, so s

a lot of convective activity with thelight inning strikes, and then this other band moving from southp towards the north bay, and those will rotate in. talk about our timing for tomorrow. as we head through the evening, we'll continue to see the shower activity. this is 5:00 a.m. tomorrow, and you can see we're looking at quite a bit of moisture around much of the bay area. then we get into a little bit of a break. this is 9:00. so, if you have some outdoor plans tomorrow morning, you might get a little brief respite from the showers, maybe a little sunshine, and it lasts until 12:00, 1:00, 2:00, so a nice little bit of a break. not say there's still not some scatters showers but won't be as widespread. by 2:00, 3:00, 4:00, another bit of a break with just widely scattered showers right on in through tomorrow evening. so, it's not going to be all a wash tomorrow. some showers could be heavy, isolated thunderstorms. and we'll have a little sunshine that will help with the daytime heating and fire up the instability. 57 tomorrow for san jose. 63 for redwood city. san francisco, 62. in t

the frozen convection that can be eaten by itself or in a sunday. thanks, ice cream. >> we are back. let's find out if we got anything wrong so far. let's go to andy levy. hi, andy. >> hi, greg. >> how are you? >> great, thanks. making you work for it. department of peace building. dana, you said we need a secretary of adorable people and you not so subtlely volunteered yourself. you can't do that. that's like giving yourself a nickname. you can't do it. >> you can do it. dick cheney did it. he was named to the search committee to get a vice president, and he went through all of the motions and he said it was the best thing he ever did was appoint himself to the search committee and then made himself vice president. don't you see? >> i see what you are saying. you can't do it. and don't compare yourself to dick cheney. >> this is a guy who was ambudsing my blog to the huffington post and now what is he? you were ambudsing my blog to the huffington post and then you were an ambudsman. >> that's what happens actually in dc. you start floating your nam

you know, now we have this situation where, as you said, for decades it's been a convection of journalismu don't write about the minor children of a president unless they are involved in an official capacity. you don't locate them. you don't say the specific hotel where they are staying and the breitbart just touted that convention because they said they shouldn't be on vacation while going through a sequester. again, this points out the way that there seems to be a double standard, a very different standard for this particular first family. when the customary things that other first lafamilies do, they take vacations during wars and recessions are suddenly questioned. >> toure, this isn't the first time that the obama girls have been in the right spotlight. the nra used them in an ad. >> yes. >> and wayne lapierre defended the move. listen to this. >> mr. lapierre, do you regret putting up that ad? >> the point of that ad was this. it wasn't picking on the president's kids. >> it mentions them. >> the president's kids are safe and we are all thankful for it. the point of that ad -- >> th

we've got some good convection here. >> john makes the risky choice to chase alone today.r, make sure to stay connected. >> over here is the am radio. i see some of the antennas there. >> after three hours on the road, he sees the development he's been waiting for. >> behind me is a fully formed cell and i'm on the eastern side of it now, which means that i want to get around it. >> coming in behind the storm is the safest part of the storm because you're not threatened by the storm coming at you, but at the same time, you're in the part of the storm where any tornadoes will typically form. >> to his dismay, he sees he's in exactly the wrong place. >> unfortunately, it looks like i'm headed more into the center of this cell than i'd like to. >> i realized i had to drive through the thunderstorms in order to get to the back side of them. >> we're in a tornado watch that has been issued until 8:00 this evening. >> this cloud here starting to drop down a little bit. >> despite the risk, john continues to record, a dangerous distraction in an already tense situation. >> again,

we've got heat transfer by conduction, heat transfer by convection and, last of all, heat transfer bydiation. and heat transfer by radiation, we talked about this idea. that everything is emitting radiation of some frequency. these are electromagnetic waves. we'll be talking about electromagnetic waves later in the course. and electromagnetic waves have a frequency. there's a high frequency. tick, tick, tick, tick, tick, tick, tick. and there's a low frequency. tick, tick, tick, tick. there's a vibrational frequency to waves. and that vibrational frequency to the waves is directly proportional to the temperature. temperature of the sun is enormous, and therefore we have an enormous frequency, so high a frequency that it activates the optical system in your eyes, we call it light. that's very, very high frequency. millions of billions of cycles per second of such little vibrations. very, very high frequency. high frequency because the sun's electrons are shaking at high rates. we'll gonna learn later on, if you take an electron and shake it back and forth, you'll get a wave in space th

it will come up by a process we'll call-- later call convection, okay? or we'll have to come a little bit from that radiator and migrate into the rooms. anyway, it was cold, and in cold nights, we had a way of getting through. what my mother would do is, downstairs in the kitchen, she would cook a great, big bucket of water. i mean, not a bucket but a great, big pan or what do you call it? pail, you know what i'm talking-- a container, container, okay, a container of water. it would take a long time to heat that water up, gang, a long time to heat that water up. and she'd take that water and she'd pour it into a jug. and that jug was what we call the hot water bottle. and that jug was like a clay jug, and she'd fill it really hot-- i mean, really, really high. and you put your feet on it, you're gonna burn. so we put a towel on there. and you go upstairs and you put it in your bed, you put it at the bottom, and you put your feet on it. and we had an old adage, that if your feet are warm, you're warm, okay? when your feet get cold at night, you're sleepin

. >> it uses convection to distribute the heat. >> and the infrared heat cook the inside out. you don't have to do pre-heating or defrosting. >> does it take good? what are we tasting first? >> these are sweet potato frys. >> frys? >> oh, my gosh. i am very surprised. >> there's two shelves in there, you can cook two different food no, sir there at the same time. -- foods in there at the same time. >> and cinnamon on the banana. >> another thing you can do, you know, if you put fruit in here, add some cinnamon, it's a nice spice that stabilizes blood sugar levels. i love it. you can all enjoy healthy unfryed foods. everyone in the audience is going home with one! enjoy it. and, you can enjoy that along with moll's book. moll, thank you so much for hanging out with us throughout the show today, be sure to log on to www.thedoctorstv.com, to find out about anything you may have missed on today's show. or to share your health questions with us. and hey, since we are eating all of these wonderful, wonderful foods, these are my doctor's orders: it's not always the food you are eatin

kind of like a convection oven. and a paddle to distribute the oil.> just note, everybody, how little oil was used in the making of these fries. normally, how much would you use? >> that's the thing. normally, when you're deep frying, you might use up to this much oil. just to deep fry. you are only using this much. again, that is not a license to go and eat fries all the time. >> why? >> this is still an indulgence. if you're normally deep-frying, this is a good idea. you'll save over 100 calories and 13 grams of fat. again, don't add fries to every meal. but if you do deep fry, it's a cool thing. >> how long does it take? >> 30 to 40 minutes. they do take a little bit longer than deep frying. but you can make a ton of other things. sweet potatoes. >> turns out, if you fry potatoes, they're delicious. >> amazing. >> it's like the perfect food. >> you can make a lot of other dishes. personally, probably would not make that many fries. chicken dishes, shrimp dishes. it's fast, it's easy. >> oprah was so over the top, excited about this. did that surpri

we just got a convection oven on our bus. >> oh, man.even adults and three kiddos. >> on one bus? >> we're so excited. we got two buses, one is our band and crew and one is us with our kids. we're about to move to another bus. >> grammy means new bus. >> ooh, all right! >> oh, yeah. bring on the grammy. >> before you know it, you'll be in an 18-wheeler. >> i like it. i like it. >> what else do we have? >> buttered peas to go along with our pork chops and this is grown-up mac n cheese. >> cute little cabatabes. smoked cheddar. that gives it a -- >> smoked cheddar. >> smells delicious. >> how are you? >> i'm great. how are y'all? >> mac n cheese, our favorite. >> crumb topping. you want to try? >> then for dessert? >> here is the surprise. fresh strawberries with a little balsamic cream. heavy whipping cream with balsamic vinegar in it to give you a little surprise. >> surprise! >> so delicious and yummy. >> i'll try the mac n cheese. i don't need a plate. >> you won the grammy. what's next for little big town? >> we're on our headlining t

a district court reversed the convection after testing showed that dna evidence wasn't from him.m and a federal jury awarded him $13 million because they ruled two cleveland police officers violated his civil rights by coercing information out of him and withholding evidence. another are story trending online. a feel good story about a man reunited with his georgia tech class ring after losing it more than 40 years ago. he lost it out the car window and was shocked when his brother saw the ring on facebook. the woman who found the ring posted a picture of it online in hopes of finding its owner. mission accomplished. >>> finally, a united airlines crew held up a flight for a san francisco man to make sure that he was able to say goodbye to his dying mother. his flight to texas was delayed and he was at risk for missing the connection. the crew stepped in delaying takeoff for 15 minutes. a united spokesman says being on time is a priority for the airline but the crews are allowed to make "out of the box decisions" to help customers. for more on that go to foxnews.com. >> shannon: