Naked Science Forum
General Science => General Science => Topic started by: DoctorBeaver on 16/06/2007 08:29:31
-
During the storm here yesterday I noticed a lot of lightening that wasn't accompanied by thunder. How does that happen?
-
The thunder was too far away... perhaps had moved past you or was not close enough to you (as in the heart of the storm.)
-
The storm was very local
-
WOW... That is odd then.. I wonder can there be claps of thunder too high to hear maybe higher cloud cover????or can clouds and conditions be so dense they muffle sound...you can stop me any time just pulling stuff out of my pocket.. I haven't a clue! LOL
-
I'm not sure I want to know what's in your pocket [:-X]
-
You might like what I have in my pocket! LOL, But you wouldn't believe it!!
-
Beech bark? [::)]
-
Well...Not exactly....LOL [;D]
-
[:(]
-
Stop frowning it is much better then beech bark!! [;D]
-
Curried beech bark? [:o]
-
do i know what it is, karen?
-
Curried beech bark... hummmm your getting closer! It is definitely spicey! LOL
Nope you don't know what it is Kadie! LOL!
BTW I just had on Wednesday, I think.. My very fist Indian food. They opened a resturant here locally well 14 miles away and it was wonderful.... OH my gosh it was very good and I loved Papadum...it was good..I had a pretty simple chicken curry with tomatoes onions crushed cashews,,,,yummmmy!
-
Peshwari chicken?
-
I brought the menu home it just says chicken curry!
I want to try Tandoori chicken oooooh looks good!
-
Peshwari chicken?
Whats in that dish besides spicy goodness and chicken?
-
The Tandoori is the oven in which the food is cooked. Hang on......
[diagram=251_0]
and looks a bit like this (in cross-section).
The meat is marinated in spices mixed with joghurt, then cooked on skewers in the oven.
Truly scrumptious!
-
Sounds delishious
-
You have to try Keema naan - naan bread with a lamb stuffing.
What is this curried beech bark thing that's going on? It came up in another thread too!
-
So about that thunder...LOL Does anyone know why it was not audible . Was it actually there and perhaps we just missed it? Is there such a thing as silent thunder? Here is what I found, which leads me to believe the real storm was further away from where you were! you just couldn't hear it as it was too far away! Here is what I found:
http://library.thinkquest.org/C003603/english/severestorms/thunder.shtml
"Lightning slices through air, heating it to about 60,000ºF (five times hotter than the sun’s surface!). The heated air quickly expands in an outward explosion, but then contracts as it cools. The rapid back and forth movement of air particles as it expands and contracts produces sound waves that we know as thunder.
Thunder and lightning always occur at the same time, but light travels faster than sound so we see lightning before hearing thunder. Every five seconds between the two phenomena is roughly equivalent to a mile. Thus, counting the seconds between a lightning bolt and a thunderclap, one can calculate the distance to the storm."
So the lightning comes first Doc... I see It produces a sound wave that explodes outward and that back and forth action causes the th=under which could plausibly be silent if it was sent out to far away for you too hear the sound of the thunder! Am I understanding that right.. so what determines the distance and does the thunder take place at the point of the furthest point away that the sound had traveled??
-
You have to try Keema naan - naan bread with a lamb stuffing.
What is this curried beech bark thing that's going on? It came up in another thread too!
HEE HEE HEE.. LOL Which thread I must read it?? LOL
-
You have to try Keema naan - naan bread with a lamb stuffing.
What is this curried beech bark thing that's going on? It came up in another thread too!
I am going to try all sorts of things from now on.. I will put it on my list! Let me see if it is on the menu, its on the menu for $1.99 they call it "Keema nan
nan" stuffed with minced lamb and aromatic spices.
-
That's the baby!
It's great to try new foods...good for you!
From the good Doctor, obviously......
Beech bark vindaloo:-
Get a good handful of beech bark
Nip down to the local takeaway & get a chicken vindaloo
Remove the chicken
Add the beech bark
Serve & enjoy! [:D]
-
LOL...I think I best not say it in here as to what he meant... Do you know what I mean???may I message you, without saying it in here?? LOl
By the way THanks..LOL I missed that comment in the other thread! LOL
-
That's the baby!
It's great to try new foods...good for you!
From the good Doctor, obviously......
Beech bark vindaloo:-
Get a good handful of beech bark
Nip down to the local takeaway & get a chicken vindaloo
Remove the chicken
Add the beech bark
Serve & enjoy! [:D]
OH you do not know me well, LOL I love good food and love to try new things especially food. There are a few I won't touch.. but many I will!
-
But to return to the thread topic!
I don't think that it is possible to have lightning without thunder - the sudden expansion of the super-heated air resulting from the lightning will always make a noise. You can't even touch an electric fence (not that you'd want to) without a "zap". You can get lightning within a cloud (Intracloud lightning), and so doesn't "hit" the earth. If this occurs in a local storm, but at altitude, it may be that a combination of distance, local winds etc, might dissipate the noise so that you don' hear it. I normally give up counting after about 25 - 30 seconds, because the thunder is often really weak. This is only 4 -5 miles distant, and storm clouds can easily attain these sorts of altitudes.....
-
Curried beech bark? [:o]
Why Doc,.. shame on you I missed the above post! LOL See denty's Post!
I kinda wondered if it could be muffled by that kind of thing, but it was only a guess see the posts I wrote well above at start!
-
OH you do not know me well, LOL I love good food and love to try new things especially food. There are a few I won't touch.. but many I will!
Ah, clearly not - I might now be a Sr. Member, but still a "Newbie" in knowledge of people's pursuits!
-
I kinda wondered if it could be muffled by that kind of thing, but it was only a guess see the posts I wrote well above at start!
Sorry Karen - I wasn't trying to steal your thunder! [:D]
-
LOL you did not steel my THUNDER>> LOL cause I had no Idea if that was even possible until you said that! ..LOL Don't appologise I find it funny that I was even close LOL! Did you get what doc meant?
-
Did you get what doc meant?
About thunder or curry (although some might say that the two are linked!)
-
I think they may be linked if you know what I mean! LOL
-
What is this curried beech bark thing that's going on? It came up in another thread too!
It's my favourite dish! [:)]
Considering what you do for a living, you may not approve of my being an arbivore.
-
arbivore [:D]
I have a keen desire to use wood in as many ways as possible! The worst thing we could do in the face of making them a sustainable resource would be to leave the forests alone! But this is another complex arguement......
And if I can combine eating with forestry, then I'm all for it!
-
LOL LOL!
-
I kinda wondered if it could be muffled by that kind of thing, but it was only a guess see the posts I wrote well above at start!
Sorry Karen - I wasn't trying to steal your thunder! [:D]
If Karen went on a diet, would she be lightening herself? [:D]
-
arbivore [:D]
I have a keen desire to use wood in as many ways as possible!
[:0]
Don't say that to Lo or Carolyn!
-
I kinda wondered if it could be muffled by that kind of thing, but it was only a guess see the posts I wrote well above at start!
Sorry Karen - I wasn't trying to steal your thunder! [:D]
If Karen went on a diet, would she be lightening herself? [:D]
LOL..perhaps a bit of lightening would help right about now!
-
arbivore [:D]
I have a keen desire to use wood in as many ways as possible!
[:0]
Don't say that to Lo or Carolyn!
LOL LOL..
-
arbivore [:D]
I have a keen desire to use wood in as many ways as possible!
[:0]
Don't say that to Lo or Carolyn!
I cannot believe you said that!!! [:(!] I know you're just trying to get me riled up and misbehaving but I'm not falling for it! Besides....you're the one who has the w.....oh...nevermind. [;)]
-
Gawd, she saw it [:-X]
-
Gawd, she saw it [:-X]
Yes she did! Lucky for you I have a sense of humor! [;D] [;)]
I suppose I should be grateful...at least here you can't change my post. [;)]
-
Gawd, she saw it [:-X]
Yes she did! Lucky for you I have a sense of humor! [;D] [;)]
I suppose I should be grateful...at least here you can't change my post. [;)]
As if I would [:I]
-
No, of course you woodn't [;)]
-
No, of course you woodn't [;)]
OAK-kay, are you inFIRing something? In my o-PINE-ion you're harBOUGHring a grudge BEECH-cause you TWIGged that I'd I TwEAKed 1 of your posts. Now, don't BE A BABy! [;D]
-
I WOOD never harBOUGHr a grudge against you Doc! [;D] [:X] [;)]
-
I can't find my chopped Harley Davidson. Have you seen MA HOG ANYone?
-
subLIME to the ridOAKuLARCH! BARKing mad, it SAP's my WILLow tO LIVE - let's LEAVE it there!
-
I was trying to make friends. I want to be POPLAR.
I did a weewee in a tin & ended up with a CANOPY! [:D]
-
i suppose you all think this is a TREEmendous jOAK, posts such as this PLUM new depths. I suspect this STEMS from the good Doc.
-
thats PLANE but BrEECHES no rules. it AL DERpends on where you STAND - let's not STOOP to COPSE and robbers - i enjoy this TIMBER of thROWAN words into the RING.
-
It does attract a lot of DEAD WOOD, and the people posting here are obviously BARKing mad
-
That was TRUNKated! We should all CHIP in, not NEEDLE each other - be MERI. STEMS from showing our nice PHOTOS. SYNTHESISE that!
-
i suppose you all think this is a TREEmendous jOAK, posts such as this PLUM new depths. I suspect this STEMS from the good Doc.
How can YEW think such a thing! [:0]
Anyway, if you look back through this thread I think you'll find it was Carolyn who started it [:P]
-
It does TAX US unduly!
-
ALDER posts in this thread are very silly.
-
That was TRUNKated! We should all CHIP in, not NEEDLE each other - be MERI. STEMS from showing our nice PHOTOS. SYNTHESISE that!
My apologies, not much sleep and feeling BUSHed. Cut myself SHAVING this morning, but i still look CUTe(ICLE). Sorry if that sounds VEIN.
-
How can YEW think such a thing! [:0]
Anyway, if you look back through this thread I think you'll find it was Carolyn who started it [:P]
Sorry Doc, you have me WEEPING now.
-
i BOUGH my CROWN to your eyes on STALKS.
-
How can YEW think such a thing! [:0]
Anyway, if you look back through this thread I think you'll find it was Carolyn who started it [:P]
Sorry Doc, you have me WEEPING now.
WILLOW I get an apology?
-
Not ACORNing to The STALKer Girl who is weeping away like a WILLOW for the LONESOME PINE...whom's branches hold her HEARTWOOD IN their Nimble leaves!
-
i suppose you all think this is a TREEmendous jOAK, posts such as this PLUM new depths. I suspect this STEMS from the good Doc.
How can YEW think such a thing! [:0]
Anyway, if you look back through this thread I think you'll find it was Carolyn who started it [:P]
Oh FIR crying out loud! It was yew that started it, my ELDER friend! [;D]
-
so what determines the distance and does the thunder take place at the point of the furthest point away that the sound had traveled??
Karen - the thunder is just a sound that is produced by the lightning and you hear it later; you could just as easily ask, does the music happen where the instrument produces it or in the ears of the listener.
The loudness of the thunder (i.e. where the listener is) depends upon how far away you are from the source but, also, on the terrain and the wind direction (there was a previous post about the way sound carries in a wind). Another huge factor is the level of background noise in the vicinity of the listener.
Counting the seconds between flash and bang (3 seconds per km, approx) will tell you how far away the storm is. Lightning can be seen from vast distances, sometimes, when it is reflected by high clouds - especially at night, away from street lights.
When you see any phenomenon that you can't understand (just like when the car starts to go 'funny') it is a good idea to record all the circumstances; it helps a lot when an explanation is required from an 'expert'. I find great difficulty in identifying wild birds from the book, when I get home, if I don't write down some details at the time.
Age and the brain, perhaps.
-
Thanks I know about counting and all that, but was confused about the other..as I always thout the thunder then the lightening, but I must have it backwards! Eh?
-
I always thought that the lighting would strike you count and estimate by counting how many miles away from you the eye or heart of the storm was,, say it was 12, then that would mean there were twelve miles between the lighting strike and the heart of the storm! So that is not correct?
-
I always thought that the lighting would strike you count and estimate by counting how many miles away from you the eye or heart of the storm was,, say it was 12, then that would mean there were twelve miles between the lighting strike and the heart of the storm! So that is not correct?
Yes, this is mostly right Karen, apart from the timing. So when you see the lightning, start counting. It takes about 5 seconds for sound to travel 1 mile, so for your 12 seconds, that would be 12/5 miles or 2.4 miles to where the lightning bolt was. If you were only able to count 1 second, then the lightning was 1/5 of a mile away, or about 350 yards.
I can sometimes see the lightning from storms in the Alps. As sophiecentaur says, this would be reflected within the high clouds. There is no thunder because the storms are about 100 miles away.
-
What's that, Dentstudent? "350 yards and 2.4 miles" from Germany?
In Europe we use SI units and it is our bounden duty to educate the USA into the same!
One day we will have decimal time, too.
BTW, I wish someone wood preservers from all these puns.
-
BTW, I wish someone wood preservers from all these puns.
we will gloss over your last comment.
-
What's that, Dentstudent? "350 yards and 2.4 miles" from Germany?
In Europe we use SI units and it is our bounden duty to educate the USA into the same!
One day we will have decimal time, too.
BTW, I wish someone wood preservers from all these puns.
Yes, I know. i just thought it might help with the explanation first!
I'm off for a 250g steak! Hmmn, now THAT doesn't sound right!
-
Thanks Stuart and everyone..